Add a Guess Punctuation button similar to the existing Guess Case functionality.

When clicked, the button should automatically detect ASCII punctuation in entered titles and replace it with the appropriate preferred Unicode punctuation where applicable.

This issue is intentionally limited to implementing the punctuation-guessing/replacement functionality. Highlighting changes, character-level diffs, undo support, and improvements to Guess Case should be handled separately.

This is a smaller scoped part of MBS-11646.