Closes #7080: Remove the 'RUCSS' acronym from the Remove Unused CSS button

[Miraeld]

Description

Fixes #7080
It only changes the text displayed to the user from Remove Unused CSS (RUCSS) to Remove Unused CSS

Type of change

• Bug fix (non-breaking change which fixes an issue).

Detailed scenario

Just visit the File optimisation tab of the setting

Technical description

Documentation

N/a

New dependencies

None

Risks

None

Mandatory Checklist

Code validation

• I validated all the Acceptance Criteria. If possible, provide screenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Code style

• I wrote a self-explanatory code about what it does.
• I protected entry points against unexpected inputs.
• I did not introduce unnecessary complexity.
• Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
Report missing for c2e65f01	❌ 0.00% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (c2e65f0)	Report Missing	Report Missing	Report Missing
Head commit (7caadd0)	38112	16690	43.79%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#7085)	1	0	0.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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Footnotes

1. Codacy didn't receive coverage data for the commit, or there was an error processing the received data. Check your integration for errors and validate that your coverage setup is correct. ↩

[hanna-meda]

Confirmed that 'RUCSS' acronym is removed on PR.