Adjustments to handling of hook errors in FT state preparation circuit synthesis

[pehamTom]

Description

Currently, there is a bug in the handling of hook errors where they are not computed quite correctly. Unfortunately, this didn't come up in previous simulations and was therefore missed.

In the process of fixing this and resynthesizing the current circuits, I realized that sometimes, flagging the first verification layer leads to better overall results than handling hook errors in the second verification layer. Therefore, this PR introduces an option in the state preparation synthesis that chooses whether the first layer should be hooked or not.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov]

Codecov Report

Attention: Patch coverage is 90.90909% with 2 lines in your changes missing coverage. Please review.

Project coverage is 83.5%. Comparing base (9995a01) to head (072be86).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/mqt/qecc/ft_stateprep/state_prep.py	90.9%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #285     +/-   ##
=======================================
- Coverage   83.5%   83.5%   -0.1%     
=======================================
  Files         49      49             
  Lines       4153    4151      -2     
  Branches     372     372             
=======================================
- Hits        3471    3468      -3     
- Misses       682     683      +1     

Flag	Coverage Δ		*Carryforward flag
cpp	83.6% <ø> (ø)		Carriedforward from b024e0e
python	83.4% <90.9%> (-0.1%)	⬇️

*This pull request uses carry forward flags. Click here to find out more.

Files with missing lines	Coverage Δ
src/mqt/qecc/ft_stateprep/state_prep.py	71.7% <90.9%> (-0.2%)	⬇️