Fix infinite 302 redirect when reporting an issue

If the user is currently on “All Projects” and their default
project is disabled, then clicking “Report Issue” would result
in an infinite 302 redirect loop

Fixes #21157

bug_report_page.php

@@ -138,8 +138,8 @@
 	}
 
 	if( ( ALL_PROJECTS == $t_project_id || project_exists( $t_project_id ) )
-	 && $t_project_id != $t_current_project
-	) {
+		&& $t_project_id != $t_current_project
+		&& project_get_field( $t_project_id, 'enabled' ) ) {
 		helper_set_current_project( $t_project_id );
 		# Reloading the page is required so that the project browser
 		# reflects the new current project