Includes:
* Wrapping longer lines and reducing alignment levels to fit more data on the screen.
* Restoring `esc_attr()` for input values, which may include translatable parts.
* Adding comments to closing `</div>` tags and PHP `endif` statements.
* Reducing the context switching between HTML and PHP.
* Balancing PHP conditionals to better reflect the structure.
* Removing repeated function calls to improve performance.
* Renaming some variables for clarity and consistency.
Follow-up to [470], [601], [963], [1227], [1664], [2746], [3029], [6976], [7230], [11350], [14051], [14553], [21891], [34691], [34749], [37747], [38066], [41182], [41986], [42343], [43571], [48710], [50830], [51892], [53706].
See #55647.
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