Inconsistency between Clear used CSS / Critical Images vs. Clean […] buttons

[hanna-meda]

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Made sure you’re on the latest version: 3.16-alpha1 ✓
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Describe the bug
Currently, we have a couple of discrepancies in UI regarding the Clear used CSS / Critical Images accessible from either Admin top bar or from WPR Dashboard - Quick Actions section.

Case 1:
While RUCSS enabled, visit a Page URL while being logged in and check the Admin bar.
Notice that the button reads "Clean Used CSS of this URL".

Case 2:
With RUCSS disabled, go to the WPR Dashboard and inspect the Quick Actions section.
Notice that the button for Critical Images Cache reads "Clean Critical Images" (meanwhile in Admin bar it is used "Clear").

Expected behavior
The button should read in all places and for all cases, "Clear" instead of "Clean".

[jeawhanlee]

Reproduce the problem ✅
I can see the problem in the code.

Identify the root cause ✅
We use Clean here & here instead of Clear

Scope a solution ✅
We need to update the text here & here to use Clear

Estimate the effort ✅
[XS]

[MathieuLamiot]

Valdiated by QA: https://wp-media.slack.com/archives/CUT7FLHF1/p1712740637476069?thread_ts=1712715812.742159&cid=CUT7FLHF1