Administration: CSS fix for classic editor tagchecklist.

[umeshnevase]

This PR fixes the line height of list item in tagchecklist. The delete icon and text is not aligned if we select classic editor.

Trac ticket: https://core.trac.wordpress.org/ticket/65133

Use of AI Tools

No

[github-actions]

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Props umeshnevase.

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[github-actions]

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[apermo]

LGTM