fix: combined and query with relational query condition returns incorrect results (#7593)

spec/CloudCode.spec.js

@@ -3524,4 +3524,23 @@ describe('sendEmail', () => {
       'Failed to send email because no mail adapter is configured for Parse Server.'
     );
   });
+
+  it('should have object found with nested relational data query', async () => {
+    const obj1 = Parse.Object.extend('TestObject');
+    const obj2 = Parse.Object.extend('TestObject2');
+    let item2 = new obj2();
+    item2 = await item2.save();
+    let item1 = new obj1();
+    const relation = item1.relation('rel');
+    relation.add(item2);
+    item1 = await item1.save();
+    Parse.Cloud.beforeFind('TestObject', req => {
+      const additionalQ = new Parse.Query('TestObject');
+      additionalQ.equalTo('rel', item2);
+      return Parse.Query.and(req.query, additionalQ);
+    });
+    const q = new Parse.Query('TestObject');
+    const res = await q.first();
+    expect(res.id).toEqual(item1.id);
+  });
 });