Revert "remove IsWarning in tmpl (go-gitea#26120)"

This reverts commit ab72f7e.

Author: silverwind

templates/repo/issue/view_content/pull.tmpl

@@ -13,7 +13,7 @@
 	{{- else if .IsBlockedByOutdatedBranch}}red
 	{{- else if .IsBlockedByChangedProtectedFiles}}red
 	{{- else if and .EnableStatusCheck (or .RequiredStatusCheckState.IsFailure .RequiredStatusCheckState.IsError)}}red
-	{{- else if and .EnableStatusCheck (or (not $.LatestCommitStatus) .RequiredStatusCheckState.IsPending)}}yellow
+	{{- else if and .EnableStatusCheck (or (not $.LatestCommitStatus) .RequiredStatusCheckState.IsPending .RequiredStatusCheckState.IsWarning)}}yellow
 	{{- else if and .AllowMerge .RequireSigned (not .WillSign)}}red
 	{{- else if .Issue.PullRequest.IsChecking}}yellow
 	{{- else if .Issue.PullRequest.IsEmpty}}grey