Update p4c beyond incompatible optimization changes

[pudelkoM]

This PR pulls in incompatible updates to p4c and adjusts our code to work with/around them. These fixes are incomplete and some tests need to be disabled.
The compiled main.p4 pipeline definition does not change.

[codecov]

Codecov Report

Merging #977 (80e8400) into main (adb9d67) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #977   +/-   ##
=======================================
  Coverage   79.37%   79.37%           
=======================================
  Files         342      342           
  Lines       31109    31164   +55     
=======================================
+ Hits        24692    24736   +44     
- Misses       6417     6428   +11     

Impacted Files	Coverage Δ
stratum/p4c_backends/fpm/hit_assign_mapper.h	100.00% <ø> (ø)
stratum/p4c_backends/fpm/hit_assign_mapper.cc	93.54% <100.00%> (-6.46%)	⬇️
...um/p4c_backends/fpm/pipeline_intra_block_passes.cc	92.80% <0.00%> (-2.88%)	⬇️
stratum/p4c_backends/test/test_inspectors.h	94.54% <0.00%> (-1.82%)	⬇️
stratum/p4c_backends/fpm/pipeline_block_passes.cc	90.57% <0.00%> (-0.53%)	⬇️
stratum/p4c_backends/fpm/utils.cc	88.25% <0.00%> (+0.40%)	⬆️