Pulled in changes for float fix for issue 791 and svd threshold updated in float code

EVS 26.444 BE test passes.
decoder pytests:
MLD scores:
Original inputs: 562 failed, 374 skipped
MLD > 10: 45
MLD > 5 : 109
MLD < 5 : 408
+10dB inputs: 562 failed, 374 skipped
MLD > 10: 168
MLD > 5 : 194
MLD < 5 : 200
-10dB inputs: 562 failed, 374 skipped
MLD > 10: 13
MLD > 5 : 48
MLD < 5 : 501

encoder pytests results:
MLD scores:
Original inputs: 562 tests: 237 passes, 325 failures, 374 skipped
MLD > 10: 16
MLD > 5 : 24
MLD < 5 : 522
+10dB inputs: 562 tests: 263 passes, 299 failures, 374 skipped
MLD > 10: 24
MLD > 5 : 47
MLD < 5 : 491
-10dB inputs: 562 tests: 254 passes, 308 failures, 374 skipped
MLD > 10: 5
MLD > 5 : 18
MLD < 5 : 539