cleanup locale function usage (#27227) (#27240)

Backport #27227 by @denyskon

Throughout the Gitea codebase, you can meet some weird constructions to
make `locale.Tr` work in subtemplates.
Since we now have `ctx.Locale.Tr` which solves that problem, clean up
various templates which pass `locale` through `dict` or use some weird
constructions like `$.root.locale`

Going on, it would be great to replace every case of `$.locale.Tr` and
`.locale.Tr` with `ctx.Locale.Tr`, but that needs to be done with
patience.

Co-authored-by: Denys Konovalov <kontakt@denyskon.de>

templates/repo/actions/runs_list.tmpl

@@ -8,7 +8,7 @@
 	{{range .Runs}}
 		<div class="flex-item gt-ac">
 			<div class="flex-item-leading">
-				{{template "repo/actions/status" (dict "status" .Status.String "locale" $.locale)}}
+				{{template "repo/actions/status" (dict "status" .Status.String)}}
 			</div>
 			<div class="flex-item-main">
 				<a class="flex-item-title" title="{{.Title}}" href="{{if .Link}}{{.Link}}{{else}}{{$.Link}}/{{.Index}}{{end}}">

templates/repo/actions/status.tmpl

@@ -12,7 +12,7 @@
 {{- $className = .className -}}
 {{- end -}}
 
-<span class="gt-df gt-ac" data-tooltip-content="{{.locale.Tr (printf "actions.status.%s" .status)}}">
+<span class="gt-df gt-ac" data-tooltip-content="{{ctx.Locale.Tr (printf "actions.status.%s" .status)}}">
 {{if eq .status "success"}}
 	{{svg "octicon-check-circle-fill" $size (printf "text green %s" $className)}}
 {{else if eq .status "skipped"}}