Backport #22037.
When deleting a closed issue, we should update both `NumIssues`and
`NumClosedIssues`, or `NumOpenIssues`(`= NumIssues -NumClosedIssues`)
will be wrong. It's the same for pull requests.
Releated to #21557.
Alse fixed two harmless problems:
- The SQL to check issue/PR total numbers is wrong, that means it will
update the numbers even if they are correct.
- Replace legacy `num_issues = num_issues + 1` operations with
`UpdateRepoIssueNumbers`.
* When non-admin users use code search, get code unit accessible repos in one main query
* Modified some comments to match the changes
* Removed unnecessary check for Access Mode in Collaboration table
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Lauris BH <lauris@nix.lv>
* Move access and repo permission to models/perm/access
* fix test
* fix git test
* Move functions sequence
* Some improvements per @KN4CK3R and @delvh
* Move issues related code to models/issues
* Move some issues related sub package
* Merge
* Fix test
* Fix test
* Fix test
* Fix test
* Rename some files
