Fix bad commits from around db89fc03

This reverts commit 503905c6.

Replace `ROXYs_TRex` with pre-defines of the relevant pins at the configuration level.

Option to pause probe deployment only when triggered, for manually-deployed allen-key probe (#13698)

Co-Authored-By: the-real-orca <stephan.veigl@gmail.com>

Add option to move away from endstop after homing.
- Add `ENDSTOP_BACKOFF` for printers with a recessed Z home button (Lulzbot TAZ 6).
- Also prevents chattering when sensorless homing with axes against bumpers.

Co-Authored-By: 7eggert <7eggert@gmx.de>
Co-Authored-By: robbycandra <robbycandra.mail@gmail.com>