WP Parse.ly: Fix issue with support user bypass

[vaurdan]

Description

This PR is a follow up of #5765. Using user_can to check for support users will return true, even if the user is a regular super admin. This is not the desired behaviour, as a certain Parse.ly Content Helper feature might be disabled on the site, which should still be visible to support users, but not regular super admins.

This PR changes how it is detecting a support user, and uses the user_has_vip_support_role method instead.

Changelog Description

Fixed

• WP Parse.ly: Fixed how Support Users are detected in the Parse.ly plugin.

Pre-review checklist

Please make sure the items below have been covered before requesting a review:

• This change works and has been tested locally or in Codespaces (or has an appropriate fallback).
• This change works and has been tested on a sandbox.
• This change has relevant unit tests (if applicable).
• This change uses a rollout method to ease with deployment (if applicable - especially for large scale actions that require writes).
• This change has relevant documentation additions / updates (if applicable).
• I've created a changelog description that aligns with the provided examples.

Pre-deploy checklist

• VIP staff: Ensure any alerts added/updated conform to internal standards (see internal documentation).

Steps to Test

Same as #5765.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 30.43%. Comparing base (87ffe8c) to head (f300b4f).

Files with missing lines	Patch %	Lines
vip-parsely/vip-parsely.php	0.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #5965      +/-   ##
=============================================
+ Coverage      30.36%   30.43%   +0.06%     
  Complexity      4812     4812              
=============================================
  Files            288      288              
  Lines          21132    21120      -12     
=============================================
+ Hits            6417     6427      +10     
+ Misses         14715    14693      -22     

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[acicovic]

@vaurdan, I think this PR can be merged independently of when Parsely/wp-parsely#2895 is merged and deployed. Correct?

[vaurdan]

@acicovic that is correct!

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud