Fix: Proper handling of arrays for cloud validator

[dblythy]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

I've just realised that Cloud Validators fail with expected type array, even when an array is provided.

Here's the test that fails on the master:

  it('set params type allow array', async () => {
    Parse.Cloud.define(
      'hello',
      () => {
        return 'Hello world!';
      },
      {
        fields: {
          data: {
            type: Array,
          },
        },
      }
    );
    await Parse.Cloud.run('hello', { data: [{ foo: 'bar' }] });
  });

Related issue: closes #7179

[codecov]

Codecov Report

Merging #7178 (5dcff5c) into master (7f47b04) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #7178      +/-   ##
==========================================
+ Coverage   94.00%   94.02%   +0.01%     
==========================================
  Files         172      172              
  Lines       12835    12834       -1     
==========================================
+ Hits        12066    12067       +1     
+ Misses        769      767       -2     

Impacted Files	Coverage Δ
src/triggers.js	94.58% <100.00%> (-0.02%)	⬇️
src/RestWrite.js	94.00% <0.00%> (+0.32%)	⬆️

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[parseplatformorg]

🎉 This change has been released in version 5.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 5.0.0