Plus: 3 times 2 float / to 1 float / and 2 float *
      and, reciprocal is an optimized operation

While homing or probing it might be bad if the stop/trobe triggers during the first part and the second is still in the buffer.

This reverts commit 0eef0ff0de, reversing
changes made to d8582b7506.

Address #8573, #8595

Fan speed code fell into a curly brace

Example Configuration.h files are not updated yet.   You need to cross
your settings over to the default Configuration.h file in the \Marlin
directory.   (UBL_G26_MESH_VALIDATION enablement has moved to a new
location in the file.)

Addressing #6992 and #5851

* Change all direct changes of ubl.state.active to
  set_bed_leveling_enabled() which handles apply/unapply
  leveling to maintain current_position consistency.

Fix invalidation of UBL mesh to invalid unreachable
  mesh points as well (delta corners).

Fix UBL_DELTA unapply_leveling logic and when
it gets applied, including fade_height changes.

Add optional M114 D for detailed position information,
disabled from compilation by default (M114_DETAIL).

* UBL_DELTA raw and inline kinematics

* UBL planner fall through fix

* consistent variable names

* Cleanup orphaned code and whitespace changes.
Use _O2.

* compile warnings cleanup

* Remove redundant #ifdef condition