`.equalTo` no working in string Arrays when using PostgreSQL

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest version of Parse Server.

Issue Description

When using equalTo on an Array of Strings with a PostgreSQL DB, an error gets thrown.
Might be related to #6403
Seems to be an encoding issue for Postegres queries.

Steps to reproduce

1. Set up Parse with PostgreSQL
2. Add a new Class with an Array Field and add strings (it's stored as jsonb on the db)
3. Try to access it via equalTo

Using parse/node

"use strict";
const Parse = require("parse/node");

Parse.initialize("appId");
Parse.serverURL = "http://localhost:1337/parse/";

Parse.Config.get()
  .then((config) => {
    console.debug(`Parse API Connection established.`);
  })
  .catch(console.error)
  .then(() => new Parse.Query("testClass"))
  .then((qry) => qry.get("bPWn1BIwN3"))
  .then((res) => console.log("actual data:", res.get("stringArray")))
  .then(() => new Parse.Query("testClass"))
  .then((qry) => {
    qry.equalTo("stringArray", "stringOne");
    return qry.find();
  })
  .then(() => console.log("will not be triggered"))
  .catch((err) => console.error("we fail with:", err));

$ npm run start

> test-setup@1.0.0 start
> node ./index.js

Parse API Connection established.
actual data: [ 'stringOne', 'stringTwo' ]
we fail with: [ParseError: [object Object]
    at handleError (/home/bastian/datenhalde/pgTest/node_modules/parse/lib/node/RESTController.js:426:17)
    at processTicksAndRejections (node:internal/process/task_queues:94:5)] {
  code: 1
}

on the Parse Dashboard:

const qry = new Parse.Query("test")
qry.equalTo("stringArray", "stringOne");
console.log(await qry.find());  

Output:

{
  "message": {
    "length": 165,
    "name": "error",
    "severity": "ERROR",
    "code": "22P02",
    "detail": "Token \"stringOne\" is invalid.",
    "position": "44",
    "where": "JSON data, line 1: stringOne",
    "file": "jsonfuncs.c",
    "line": "617",
    "routine": "json_ereport_error"
  },
  "name": "Error",
  "stack": "s@http://0.0.0.0:4040/bundles/dashboard.bundle.js:75:630545\nt@http://0.0.0.0:4040/bundles/dashboard.bundle.js:75:624686\nd</n<@http://0.0.0.0:4040/bundles/dashboard.bundle.js:16:97361\nr@http://0.0.0.0:4040/bundles/dashboard.bundle.js:16:97493\nhandleError@http://0.0.0.0:4040/bundles/dashboard.bundle.js:75:674336\n"
}

using

Server

• Parse Server version: 4.5.0
• Operating system: 5.10.23-1-MANJARO (localhost)
• Local or remote host (AWS, Azure, Google Cloud, Heroku, Digital Ocean, etc): localhost

Database

• System (MongoDB or Postgres): Postgres
• Database version: 13
• Local or remote host (MongoDB Atlas, mLab, AWS, Azure, Google Cloud, etc): localhost

Client

• SDK (iOS, Android, JavaScript, PHP, Unity, etc): parse/node / parse dashboard
• SDK version: 3.1 / 2.1.0

Logs

Parse Server Logs:

verbose: REQUEST for [GET] /parse/classes/test: {
  "where": {
    "stringArray": "stringOne"
  }
} {"method":"GET","url":"/parse/classes/test","headers":{"user-agent":"node-XMLHttpRequest, Parse/js3.1.0 (NodeJS 15.11.0)","accept":"*/*","content-type":"text/plain","host":"localhost:1337","content-length":"197","connection":"close"},"body":{"where":{"stringArray":"stringOne"}}}
error: Parse error:  error: invalid input syntax for type json {"code":1,"stack":"Error: error: invalid input syntax for type json\n    at /path/to/local/parse/node_modules/parse-server/lib/Controllers/DatabaseController.js:1170:21\n    at processTicksAndRejections (node:internal/process/task_queues:94:5)"}

Start by reproducing the PostgreSQL 13 failure with the provided parse/node or Dashboard query, then inspect parse-server/lib/Controllers/DatabaseController.js around line 1170 and the JSONB query handling it reaches. Done means equalTo on a string array returns matching objects without PostgreSQL's invalid JSON input error.