feat: add surgical history view to translations modal

[jeremydw]

This PR adds a string field history viewer to the translations modal.

• The main use case is tracking down changes to translation keys for governance and auditing workflows (i.e. "who changed my translation, and why?")
• Eventually, we can expand the history viewer to other field types (non-strings, etc.)
• Eventually, we can also add compare and restore functionality.

[stevenle]

this lgtm, but i wonder if there's a small ux or copy change to indicate this is a history of the "field value" (not the translations itself). i'm fine leaving it as is if you don't have any ideas.

while you're on this component, would you mind decreasing the button sizes to match whatever size we're using in the localization modal? i noticed it looked a little big while working on a different component, figure we might as well change it here.

[jeremydw]

done!