Restore missing initialization of text thread actions (#33422)

Fixes a regression introduced in
https://github.com/zed-industries/zed/pull/33289

Release Notes:

- Fixed a bug where some text thread actions were accidentally removed.
b9f81c7ce7Max Brunsfeld committed on 6/25/2025, 10:48:40 PM· committed by GitHubparentb1450b6
1 file changedLine totals unavailable