deduped `open_thread` and `create_thread` for nomral text message to just be `thread`. This is because both `create_thread` and `open_thread` have the same function. This diff was inspired by this [[ https://phab.comm.dev/D5381#:~:text=57%E2%80%9364-,I%27m%20down%20with%20the%20copy%20change%20but%20it%20seems%20like%20we%20could%20dedup%20these%20now%20that%20they%20have%20the%20same%20title.%20Makes%20sense%20to%20handle%20that%20in%20a%20separate%20diff,-Revision%20Contents | comment ]] on D5381
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Depends on D5381
Linear Task: [[ https://linear.app/comm/issue/ENG-2037/implement-tooltip-bottom-toolbar | ENG-2037 ]]