ci: 支持手动触发 CodeQL

[CSJ608]

变更

• 为 CodeQL 增加手动触发入口
• 保留私有仓库自动跳过、公开仓库自动执行的条件

仓库公开后，此 PR 会同时产生新的公开仓库事件，用于验证完整安全扫描。

[github-advanced-security]

You are seeing this message because GitHub Code Scanning has recently been set up for this repository, or this pull request contains the workflow file for the Code Scanning tool.

What Enabling Code Scanning Means:

• The 'Security' tab will display more code scanning analysis results (e.g., for the default branch).
• Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results.
• You will be able to see the analysis results for the pull request's branch on this overview once the scans have completed and the checks have passed.

For more information about GitHub Code Scanning, check out the documentation.