Sort issue by position in codebase in ByIssueLevelAndTypeReport if le…

…vel & type equal

PHP sorting only became stable in 8.0. For previous versions we would
still like duplicate issues to be sorted into a logical order.

src/Psalm/Report/ByIssueLevelAndTypeReport.php

@@ -180,8 +180,8 @@ private function sortIssuesByLevelAndType(): void
     {
         usort($this->issues_data, function (IssueData $left, IssueData $right): int {
             // negative error levels go to the top, followed by large positive levels, with level 1 at the bottom.
-            return [$left->error_level > 0, -$left->error_level, $left->type] <=>
-                [$right->error_level > 0, -$right->error_level, $right->type];
+            return [$left->error_level > 0, -$left->error_level, $left->type, $left->file_path, $left->file_name, $left->line_from] <=>
+                [$right->error_level > 0, -$right->error_level, $right->type, $right->file_path, $right->file_name, $right->line_from];
         });
     }
 }