Support staged roll-out for the RTC integration

[maxschmeling]

Description

Supports staged roll-out for the RTC integration. This is accomplished through constants that specify which version of the Gutenberg plugin and the RTC plugin to load. When those constants are updated, they'll be deployed with this repo on the normal staged released.

Changelog Description

Added

• Add support for staged roll-out of the Real-Time Collaboration integration

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

[Copilot]

Pull request overview

This PR changes the RTC (Real-Time Collaboration) integration from using dynamic version detection to using hardcoded version constants, enabling staged rollouts where different environments can load different versions of the plugins.

Changes:

• Introduces two namespace-level constants (VIP_RTC_PLUGIN_VERSION and VIP_RTC_GUTENBERG_VERSION) to control which versions of the plugins are loaded
• Updates path construction logic in get_gutenberg_path() and get_plugin_path() to use the version constants instead of dynamic version detection
• Removes the get_latest_version() method which is no longer needed
• Updates tests to validate the new constants and reflect the renamed test method

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
integrations/real-time-collaboration.php	Adds version constants, updates path construction to use constants instead of dynamic version detection, removes get_latest_version() method
tests/integrations/test-real-time-collaboration.php	Renames test to better reflect its purpose, adds test for version constants, removes test for deleted get_latest_version() method

[codecov]

Codecov Report

❌ Patch coverage is 44.44444% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 35.19%. Comparing base (255dc7c) to head (6b8a19b).
⚠️ Report is 19 commits behind head on develop.

Files with missing lines	Patch %	Lines
integrations/real-time-collaboration.php	44.44%	5 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #6731      +/-   ##
=============================================
- Coverage      35.21%   35.19%   -0.02%     
- Complexity      5082     5085       +3     
=============================================
  Files            295      295              
  Lines          20841    20844       +3     
=============================================
- Hits            7340     7337       -3     
- Misses         13501    13507       +6     

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[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 SonarQube Cloud