Refactor some trivial problems (#34959)

1. make our "route group pattern match" also update chi's RoutePattern
2. fix incorrect "NotFound" call in conda package
3. make ".flex-item .flex-item-main" has a general gap, then no need to
use `tw` tricks
4. improve the "test webhook" UI

templates/shared/issuelist.tmpl

@@ -35,7 +35,7 @@
 					</div>
 					{{end}}
 				</div>
-				<div class="flex-item-body tw-mt-1">
+				<div class="flex-item-body">
 					<a class="index" href="{{if .Link}}{{.Link}}{{else}}{{$.Link}}/{{.Index}}{{end}}">
 						{{if eq $.listType "dashboard"}}
 							{{.Repo.FullName}}#{{.Index}}