fix(steering-odometry): convert twist to steering angle (backport #1288)

[mergify]

The logic in this function was incorrect, if we divide by 0., the input of the atan goes to inf which should result in PI/2 instead of 0.. What should be handled instead are nan values as an input of the atan function that can happen if we input 0./0..

---

This is an automatic backport of pull request #1288 done by Mergify.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.21%. Comparing base (1d9c5c3) to head (e8f89ef).
Report is 1 commits behind head on iron.

Additional details and impacted files

@@            Coverage Diff             @@
##             iron    #1296      +/-   ##
==========================================
- Coverage   87.21%   87.21%   -0.01%     
==========================================
  Files         103      103              
  Lines       11337    11336       -1     
  Branches     7159     7158       -1     
==========================================
- Hits         9888     9887       -1     
  Misses       1443     1443              
  Partials        6        6              

Flag	Coverage Δ
unittests	87.21% <100.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ring_controllers_library/src/steering_odometry.cpp	82.16% <100.00%> (-0.12%)	⬇️