fix: Parse.Query.containedIn and matchesQuery do not work with nested objects (#9738)

spec/ParseQuery.spec.js

@@ -5306,4 +5306,72 @@ describe('Parse.Query testing', () => {
         expect(score).toEqual([1]);
       }, { useMasterKey: true });
   });
+
+  describe_only_db('mongo')('query nested keys', () => {
+    it('queries nested key using equalTo', async () => {
+      const child = new Parse.Object('Child');
+      child.set('key', 'value');
+      await child.save();
+  
+      const parent = new Parse.Object('Parent');
+      parent.set('some', {
+        nested: {
+          key: {
+            child,
+          },
+        },
+      });
+      await parent.save();
+  
+      const query1 = await new Parse.Query('Parent')
+        .equalTo('some.nested.key.child', child)
+        .find();
+  
+      expect(query1.length).toEqual(1);
+    });
+  
+    it('queries nested key using containedIn', async () => {
+      const child = new Parse.Object('Child');
+      child.set('key', 'value');
+      await child.save();
+  
+      const parent = new Parse.Object('Parent');
+      parent.set('some', {
+        nested: {
+          key: {
+            child,
+          },
+        },
+      });
+      await parent.save();
+  
+      const query1 = await new Parse.Query('Parent')
+        .containedIn('some.nested.key.child', [child])
+        .find();
+  
+      expect(query1.length).toEqual(1);
+    });
+  
+    it('queries nested key using matchesQuery', async () => {
+      const child = new Parse.Object('Child');
+      child.set('key', 'value');
+      await child.save();
+  
+      const parent = new Parse.Object('Parent');
+      parent.set('some', {
+        nested: {
+          key: {
+            child,
+          },
+        },
+      });
+      await parent.save();
+  
+      const query1 = await new Parse.Query('Parent')
+        .matchesQuery('some.nested.key.child', new Parse.Query('Child').equalTo('key', 'value'))
+        .find();
+  
+      expect(query1.length).toEqual(1);
+    });
+  });
 });