37bbf2c902
Backport #22776 Fix #22581 TLDR: #18446 made a mess with ForeignIndex and triggered a design flaw/bug of #16356, then a quick patch #21271 helped #18446, then the the bug was re-triggered by #21721 . Related: * #16356 * BasicIssueContext https://github.com/go-gitea/gitea/pull/16356/files#diff-7938eb670d42a5ead6b08121e16aa4537a4d716c1cf37923c70470020fb9d036R16-R27 * #18446 * If some issues were dumped without ForeignIndex, then they would be imported as ForeignIndex=0 https://github.com/go-gitea/gitea/pull/18446/files#diff-1624a3e715d8fc70edf2db1630642b7d6517f8c359cc69d58c3958b34ba4ce5eR38-R39 * #21271 * It patched the above bug (somewhat), made the issues without ForeignIndex could have the same value as LocalIndex * #21721 * It re-triggered the zero-ForeignIndex bug. ps: I am not sure whether the changes in `GetForeignIndex` are ideal (at least, now it has almost the same behavior as BasicIssueContext in #16356), it's just a quick fix. Feel free to edit on this PR directly or replace it. Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>