High MLD case fix for OMASA format

[x] Fix for high MLD for OMASA format
[x] Also, changes made for floating code in issue 828 pulled in - ivas_stereo_dft_enc_itd.c.

Pipeline results:

• EVS 26.444 BE test passes.
• decoder pytests:
  MLD scores:
  Original inputs: 562 failed, 374 skipped
  MLD > 10: 29
  MLD > 5 : 85
  MLD < 5 : 448
  +10dB inputs: 562 failed, 374 skipped
  MLD > 10: 143
  MLD > 5 : 194
  MLD < 5 : 225
  -10dB inputs: 562 failed, 374 skipped
  MLD > 10: 7
  MLD > 5 : 39
  MLD < 5 : 516
• encoder pytests results:
  MLD scores:
  Original inputs: 562 tests:
  MLD > 10: 18
  MLD > 5 : 71
  MLD < 5 : 473
  +10dB inputs: 562 tests:
  MLD > 10: 66
  MLD > 5 : 124
  MLD < 5 : 372
  -10dB inputs: 562 tests:
  MLD > 10: 5
  MLD > 5 : 30
  MLD < 5 : 527