add monorail recording for validate command

[ryancbahan]

Implementing #7120 now that the validate stack is fully landed. Splitting out into a separate pr since the original stack had changes that didn't land.

Co-authored by @dmerand

[github-actions]

We detected some changes at packages/*/src and there are no updates in the .changeset.
If the changes are user-facing, run pnpm changeset add to track your changes and include them in the next release CHANGELOG.

Caution

DO NOT create changesets for features which you do not wish to be included in the public changelog of the next CLI release.

[github-actions]

Differences in type declarations

We detected differences in the type declarations generated by Typescript for this branch compared to the baseline ('main' branch). Please, review them to ensure they are backward-compatible. Here are some important things to keep in mind:

• Some seemingly private modules might be re-exported through public modules.
• If the branch is behind main you might see odd diffs, rebase main into this branch.

New type declarations

We found no new type declarations in this PR

Existing type declarations

packages/cli-kit/dist/public/node/monorail.d.ts

@@ -66,6 +66,10 @@ export interface Schemas {
             cmd_app_linked_config_uses_cli_managed_urls?: Optional<boolean>;
             cmd_app_warning_api_key_deprecation_displayed?: Optional<boolean>;
             cmd_app_deployment_mode?: Optional<string>;
+            cmd_app_validate_json?: Optional<boolean>;
+            cmd_app_validate_valid?: Optional<boolean>;
+            cmd_app_validate_issue_count?: Optional<number>;
+            cmd_app_validate_file_count?: Optional<number>;
             cmd_dev_tunnel_type?: Optional<string>;
             cmd_dev_tunnel_custom_hash?: Optional<string>;
             cmd_dev_urls_updated?: Optional<boolean>;