fix: align and correct translation for mute and unmute

[Antoine-Cap]

Description

Change translation to be more accurate (traduction done with native speakers)
For example in french it was describing the current state of the video instead of the button action (literal translation for "unmute" was "sound activated")

Specific Changes proposed

• Change for mute and unmute for locale DE, ES ,FR, IT, JA, KO, pt-BR, zh-CN, zh-TW

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • [] Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

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[codecov]

Codecov Report

Merging #8226 (1cc4c43) into 7.x (214f0e7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              7.x    #8226   +/-   ##
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  Coverage   81.00%   81.00%           
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  Files         116      116           
  Lines        7476     7476           
  Branches     1820     1820           
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  Hits         6056     6056           
  Misses       1420     1420           

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