DocCommentSpacingSniff: Fixer should preserve order of same annotations

Author: kukulich

SlevomatCodingStandard/Sniffs/Commenting/DocCommentSpacingSniff.php

@@ -616,7 +616,7 @@ private function sortAnnotationsToGroups(array $annotations): array
 					}
 				};
 
-				return $getExpectedOrder($firstAnnotation->getName()) <=> $getExpectedOrder($secondAnnotation->getName());
+				return $getExpectedOrder($firstAnnotation->getName()) <=> $getExpectedOrder($secondAnnotation->getName()) ?: $firstAnnotation->getStartPointer() <=> $secondAnnotation->getStartPointer();
 			});
 		}