Explicitly destroy webhooks and logs before the project deletion [RUN ALL RSPEC] [RUN AS-IF-FOSS]

What does this MR do?

• Contributes to #26259 (closed)
• Feature flag: #328393 (closed)

Problem

There are foreign keys with DELETE CASCADE option defined for web_hooks and web_hook_logs tables. Database tries to delete them in the scope of delete project query. For some cases, the query duration exceeds the statement_timeout setting. As the result, the project is stuck in a half-deleted state.

Solution

Run WebHooks::DestroyService before project.destroy call and ensure that we delete webhooks efficiently in batches.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

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  • I have included a changelog entry.
  • I have not included a changelog entry because of the feature flag.
• Documentation (if required)
• Code review guidelines
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• Style guides
• Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Security

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• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team