c6f8f24c29
- Previously, `change_frame_invoke` always ran `sequencer_skip_for_handle_tweak` check, even if the user was not using the sequencer. Now, the check is only done if the user is in the sequencer, where it is possible for them to tweak strips. - It is now impossible to change the frame from the sequencer preview, so remove that logic. - Also add some explanatory comments for RCS keymap logic in the code.