[Due for payment 2026-07-29] Deprecate Localize.translateLocal

[roryabraham]

I'm plagiarizing Tim G's proposal here, because this is essentially an analog of the same problem.

Problem

When a UI view calls a method that uses Localize.translateLocal (i.e: an impure function), the UI view will become out-of-date because it was not re-rendered when the preferredLocale changed.

Solution

Deprecate Localize.translateLocal.

Spreadsheet with the remaining items https://expensify.slack.com/archives/C05LX9D6E07/p1767074466145849?thread_ts=1767052675.446179&cid=C05LX9D6E07

Issue Owner

Current Issue Owner: @parasharrajat

[roryabraham]

Looks like @shubham1206agra got started a couple weeks ago

[shubham1206agra]

@roryabraham I need to write a design doc before kicking this issue off.

[roryabraham]

no update

[roryabraham]

Going to put this on HOLD for #66329