Use dedicated draft PR icon when possible

- Currently the generic pull-request icon is used for draft PR's. This
patch changes that by using the dedicated icon for this.
- Resolves go-gitea#20296

templates/repo/issue/view_title.tmpl

@@ -24,7 +24,11 @@
 	{{else if .Issue.IsClosed}}
 		<div class="ui red large label">{{if .Issue.IsPull}}{{svg "octicon-git-pull-request"}}{{else}}{{svg "octicon-issue-closed"}}{{end}} {{.locale.Tr "repo.issues.closed_title"}}</div>
 	{{else if .Issue.IsPull}}
-		<div class="ui green large label">{{svg "octicon-git-pull-request"}} {{.locale.Tr "repo.issues.open_title"}}</div>
+		{{if .IsPullWorkInProgress}}
+			<div class="ui grey large label">{{svg "octicon-git-pull-request-draft"}} {{.locale.Tr "repo.issues.open_title"}}</div>
+		{{else}}
+			<div class="ui green large label">{{svg "octicon-git-pull-request"}} {{.locale.Tr "repo.issues.open_title"}}</div>
+		{{end}}
 	{{else}}
 		<div class="ui green large label">{{svg "octicon-issue-opened"}} {{.locale.Tr "repo.issues.open_title"}}</div>
 	{{end}}

templates/shared/issuelist.tmpl

@@ -17,7 +17,11 @@
 							{{if .IsClosed}}
 								{{svg "octicon-git-pull-request" 16 "text red"}}
 							{{else}}
-								{{svg "octicon-git-pull-request" 16 "text green"}}
+								{{if .PullRequest.IsWorkInProgress}}
+									{{svg "octicon-git-pull-request-draft" 16 "text grey"}}
+								{{else}}
+									{{svg "octicon-git-pull-request" 16 "text green"}}
+								{{end}}
 							{{end}}
 						{{end}}
 					{{else}}