High_MLD_and_LTV_crash_fix_rend_cleanup

[x] Fix for the high MLD issue seen in MASA
[x] Fix for LTV assertions (MASA + 4ISM)
[x] Cleanup of renderer code.

EVS 26.444 BE test passes.
pytests results: 588 failed, 381 skipped

MLD scores:
Original inputs:
MLD > 10: 113; Out of these, 51 cases are PLC
MLD > 5 : 115
MLD < 5 : 360

+10dB inputs:
MLD > 10: 307
MLD > 5 : 120
MLD < 5 : 161

-10dB inputs:
MLD > 10: 72
MLD > 5 : 67
MLD < 5 : 449