Cache: Hide Admin Bar Menu When Cache is Disabled

[arunshenoy99]

Proposed changes

This PR hides the caching option in the admin bar when caching is turned off.

output.mp4

Type of Change

Production

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Dependency update
• Refactoring / housekeeping (changes to files not directly related to functionality)

Development

• Tests
• Dependency update
• Environment update / refactoring
• Documentation Update

Video

Checklist

• I have read the CONTRIBUTING doc
• I have viewed my change in a web-browser
• Linting and tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[geckod22]

@arunshenoy99 If I remeber good, that menu on top should be always present as it is not connected with the cache level in the performance panel. The performance panel cache level only write to the htaccess, while the purgeall is I think connected with cloudflare thing or other purgeable caches that could be available by server setting. Indeed before there was a check about that and Chris told that the check was not needed anymore. What do you think?