[FIX] util/modules: keep reason for force install

Since we delay force installs, it is not OK to keep only their names. We
are losing the actual reason why they are installed.

Compare, before:
```
2025-12-05 10:49:53,136 169875 INFO test_16_17 odoo.modules.migration: module base: Running migration [0.0.0>] post-01-modules-auto-discovery
2025-12-05 10:49:55,873 169875 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'onboarding' (and its dependencies) because it's a new dependency of account, payment
2025-12-05 10:49:55,876 169875 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'base_import_module' (and its dependencies) because it has been explicitly asked for
2025-12-05 10:49:55,880 169875 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'iap_extract' (and its dependencies) because it has been explicitly asked for
2025-12-05 10:49:55,885 169875 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'account_invoice_extract' (and its dependencies) because it is an auto install module that got all its auto install dependencies installed by the force install of 'iap_extract'
2025-12-05 10:49:55,890 169875 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'account_payment_term' (and its dependencies) because it has been explicitly asked for
```
With after:
```
2025-12-05 10:44:54,837 164125 INFO test_16_17 odoo.modules.migration: module base: Running migration [0.0.0>] post-01-modules-auto-discovery
2025-12-05 10:44:56,712 164125 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'onboarding' (and its dependencies) because it's a new dependency of account, payment
2025-12-05 10:44:56,714 164125 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'base_import_module' (and its dependencies) because it has been explicitly asked for
2025-12-05 10:44:56,717 164125 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'iap_extract' (and its dependencies) because it's an auto install module and all its dependencies are installed
2025-12-05 10:44:56,720 164125 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'account_invoice_extract' (and its dependencies) because it is an auto install module that got all its auto install dependencies installed by the force install of 'iap_extract'
2025-12-05 10:44:56,724 164125 INFO test_16_17 odoo.upgrade.util.modules: force install of module 'account_payment_term' (and its dependencies) because it's an auto install module and all its dependencies are installed
```

closes #365

Signed-off-by: Christophe Simonis (chs) <chs@odoo.com>

Author: aj-fuentes

src/util/const.py

@@ -11,7 +11,7 @@
 # migration environ, used to share data between scripts
 ENVIRON = {
     "__renamed_fields": collections.defaultdict(dict),
-    "__modules_auto_discovery_force_installs": set(),
+    "__modules_auto_discovery_force_installs": {},
     "__modules_auto_discovery_force_upgrades": {},
     "__fix_fk_allowed_cascade": [],
     "__no_model_data_delete": {},

src/util/modules.py

@@ -340,7 +340,7 @@ def remove_module(cr, module):
         [mod_id] = cr.fetchone()
         cr.execute("DELETE FROM ir_model_data WHERE model='ir.module.module' AND res_id=%s", [mod_id])
 
-    ENVIRON["__modules_auto_discovery_force_installs"].discard(module)
+    ENVIRON["__modules_auto_discovery_force_installs"].pop(module, None)
     ENVIRON["__modules_auto_discovery_force_upgrades"].pop(module, None)
 
 
@@ -360,7 +360,7 @@ def remove_theme(cr, theme, base_theme=None):
         [mod_id] = cr.fetchone()
         cr.execute("DELETE FROM ir_model_data WHERE model='ir.module.module' AND res_id=%s", [mod_id])
 
-    ENVIRON["__modules_auto_discovery_force_installs"].discard(theme)
+    ENVIRON["__modules_auto_discovery_force_installs"].pop(theme, None)
     ENVIRON["__modules_auto_discovery_force_upgrades"].pop(theme, None)
 
 
@@ -411,8 +411,7 @@ def rename_module(cr, old, new):
 
     fi = ENVIRON["__modules_auto_discovery_force_installs"]
     if old in fi:
-        fi.remove(old)
-        fi.add(new)
+        fi[new] = fi.pop(old)
     fu = ENVIRON["__modules_auto_discovery_force_upgrades"]
     if old in fu:
         fu[new] = fu.pop(old)
@@ -440,8 +439,7 @@ def merge_module(cr, old, into, update_dependers=True):
 
     fi = ENVIRON["__modules_auto_discovery_force_installs"]
     if old in fi:
-        fi.remove(old)
-        fi.add(into)
+        fi[into] = fi.pop(old)
     fu = ENVIRON["__modules_auto_discovery_force_upgrades"]
     if old in fu:
         if into not in fu:
@@ -596,7 +594,7 @@ def force_install_module(cr, module, if_installed=None, reason="it has been expl
                 elif ENVIRON.get("AUTO_DISCOVERY_UPGRADE"):
                     raise MigrationError("`force_install_module` can only be called from pre/post of `base`")
                 return _force_install_module(cr, module, reason="{} (done outside of a major upgrade)".format(reason))
-            ENVIRON["__modules_auto_discovery_force_installs"].add(module)
+            ENVIRON["__modules_auto_discovery_force_installs"][module] = reason
         return None
     else:
         return _force_install_module(cr, module, if_installed, reason)
@@ -1100,8 +1098,9 @@ def _trigger_auto_discovery(cr):
     for new_dep, modules in cr.fetchall():
         _force_install_module(cr, new_dep, reason="it's a new dependency of {}".format(modules))
 
-    for module in force_installs:
-        _force_install_module(cr, module)
+    for module, reason in force_installs.items():
+        kwargs = {"reason": reason} if reason else {}
+        _force_install_module(cr, module, **kwargs)
 
     for module, (init, version) in ENVIRON["__modules_auto_discovery_force_upgrades"].items():
         _force_upgrade_of_fresh_module(cr, module, init, version)
@@ -1115,6 +1114,8 @@ def modules_auto_discovery(cr, force_installs=None, force_upgrades=None):
     # The actual auto discovery is delayed in `base/0.0.0/post-modules-auto-discovery.py`
 
     if force_installs:
+        if not isinstance(force_installs, dict):
+            force_installs = dict.fromkeys(force_installs, None)
         ENVIRON["__modules_auto_discovery_force_installs"].update(force_installs)
     if force_upgrades:
         version = _caller_version()