probe_routines.py versa probe bug for outside xy measurement

[zieluch22]

Here are the steps I follow to reproduce the issue:

1. load probe , drive over the roughly center of the pice
2. setup probing parameters which should allow the measurement
3. run probie from ouside(x-,x+, y-, y+)

This is what I expected to happen:

After measurement x- probe won't move same distance to make measurement on x+. (will come back to the starting point and and go down) more details :https://forum.linuxcnc.org/qtvcp/54614-qtgragon-versa-probe-bug-probe-routines-py

This is what happened instead:

should move the same clearance distance in all direction. This will allow to rerun probing route after each other without moving xy.

It worked properly before this:

Not sure when was working correctly as I was using a bit different setup.

Information about my hardware and software:

• I am using : Distributor ID: Debian
  Description: Debian GNU/Linux 12 (bookworm)
  Release: 12
  Codename: bookworm
• I am using this kernel version : Linux debian 6.1.0-12-rt-amd64 use Tcl_SetResult and Tcl_GetStringResult #1 SMP PREEMPT_RT Debian 6.1.52-1 (2023-09-07) x86_64 GNU/Linux
• uspace-dev
  1:2.9.3.90.g86cdee2be8
  LINUXCNC - 2.9.3-90-g86cdee2be8 and python3 qtpyvcp (0.4-94.dev
• I am using this user interface Qtdragon HD:
• I am using this interface hardware Mesa card 7I76E

[zieluch22]

#3197 pull request fixing problem.