Ports fuzzy search for `/issues` and `/pulls` from gitea.
Adds fuzzy search for `/user/repo/issues` and `/user/repo/pulls`.
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## Notes
### Port: [`gitea#be5be0ac81`](be5be0ac81)
- CONFLICT (content): Merge conflict in routers/web/user/home.go
Conflict resolved by
1. keeping both `PageIsOrgIssues` and the newly introduced `IsFuzzy`
2. using `pager.AddParam(ctx, "fuzzy", "IsFuzzy")` rather than `pager.AddParamString("fuzzy", fmt.Sprintf("%v", isFuzzy))`
- CONFLICT (content): Merge conflict in templates/user/dashboard/issues.tmpl
Conflict resolved by keeping the changes from #4096, and picking the `&fuzzy=${{.IsFuzzy}}` inclusion to all urls and `{{if .PageIsPulls}}...`
### Port: [`gitea#fede3cbada`](fede3cbada)
- CONFLICT (content): Merge conflict in templates/user/dashboard/issues.tmpl
Conflict resolved by keeping previous changes and picking the replacement of `{{if .PageIsPulls}}...` with `{{template "shared/search/combo_fuzzy"...` which contains the replacement of `explorer.go` to `explorer.go_to`
### Fixup commit
replaces `Iif` with `if` which was introduced in gitea#fede3cbada
### Feature commit
adds in support for /user/repo/(issues|pulls) + test
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Kerwin Bryant <kerwin612@qq.com>
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4160
Reviewed-by: twenty-panda <twenty-panda@noreply.codeberg.org>
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Shiny Nematoda <snematoda.751k2@aleeas.com>
Co-committed-by: Shiny Nematoda <snematoda.751k2@aleeas.com>
