feat: Remove deprecation DEPPS1: Native MongoDB syntax in aggregation pipeline (#8362)

BREAKING CHANGE: The MongoDB aggregation pipeline requires native MongoDB syntax instead of the custom Parse Server syntax; for example pipeline stage names require a leading dollar sign like `$match` and the MongoDB document ID is referenced using `_id` instead of `objectId` (#8362)

src/Adapters/Storage/Postgres/PostgresStorageAdapter.js

@@ -2241,8 +2241,11 @@ export class PostgresStorageAdapter implements StorageAdapter {
           });
           stage.$match = collapse;
         }
-        for (const field in stage.$match) {
+        for (let field in stage.$match) {
           const value = stage.$match[field];
+          if (field === '_id') {
+            field = 'objectId';
+          }
           const matchPatterns = [];
           Object.keys(ParseToPosgresComparator).forEach(cmp => {
             if (value[cmp]) {