Add Business Platform-backed store list command

[dmerand]

Summary

Add shopify store list as a Business Platform-backed command for the current Shopify CLI account.

Role in the reordered stack

PR	Purpose
#7708	BP listing from main
#7709	local auth summary API
#7714	local source + auto fallback

The original stack landed local listing first. This stack flips the order because the BP path has cleaner ownership:

• @shopify/store owns the command and BP store query
• @shopify/organizations owns org discovery
• @shopify/cli-kit owns auth/session mechanics

Landing BP first also avoids putting storage-shaped helpers in the parent PR.

Scope

• add shopify store list under @shopify/store
• add the BP org-scoped accessibleShops query and codegen under packages/store
• extend @shopify/organizations with fetchOrganizationsWithAccessInfo() so callers can distinguish:
  • resolved current user + organizations
  • unresolved currentUserAccount
  • current user email for output
• list stores org-by-org with partial success handling:
  • successful orgs still contribute results when some orgs fail
  • text output gets a warning
  • JSON output includes failedOrganizations
  • debug output keeps per-org failure details
• discard malformed persisted CLI session JSON instead of crashing session readers

Review this PR as three concerns

1. org discovery in @shopify/organizations
2. per-org store listing + partial failure handling in @shopify/store
3. defensive CLI session read hardening in @shopify/cli-kit

Intentionally not in this PR

• local listing
• --source local
• BP→local fallback

Those land in #7709 and #7714.

Note on generated files

Local codegen also regenerated two unrelated admin GraphQL type files:

• packages/app/src/cli/api/graphql/admin/generated/types.d.ts
• packages/cli-kit/src/cli/api/graphql/admin/generated/types.d.ts

They stay in this branch because local codegen reproduces them and trimming them back out risks CI drift.