Fix tag-pill editor style assignment

[pmario]

This PR fixes #8737

• [BUG] [Regression] Tag pill style became ineffective in edit mode after 5.3.3 #8737

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Confirmed: pmario has already signed the Contributor License Agreement (see contributing.md)

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[pmario]

The test tiddler code

• needs to be saved
• and edited, to see what's going on

title: my-tag
tags: my-tag $:/tags/Stylesheet
color: my-tag

span.tc-tag-label[style*='my-tag'] {
  border:1px solid #08c;
  background-color:white;
  color:#08f !important;
  font-size:1rem;
  font-weight:bold;
}

[pmario]

@Jermolene -- This is a fix for #8737 if it is considered a regression

[pmario]

@CodaCodr -- Can you please test this one. https://deploy-preview-8739--tiddlywiki-previews.netlify.app/

[CodaCodr]

PASS