BASOP porting MR 311 - Port MR 2049 from float - 20250317 cleanup

Basic Info

• Original merge request in float repo: ivas-codec-pc/ivas-codec!2049 (merged)

Cleanup of the following switches, as decided 2025-03-11:

Non-BE

• NONBE_FIX_GSC_BSTR - VA: issue 1264: Fix bitstream synchronization between encoder and decoder in ACELP GSC in OMASA -> accept ⚠️ already cleaned out with !1414 (merged) + !1185 (merged) main / !2097 (merged) ivas-float-update
• NONBE_1273_ISM_METADATA_COUNTER - VA: issue 1273: fix counter overflow in ISM metadata encoder -> accept ⚠️ already cleaned out with !1414 (merged) + !1185 (merged) main / !2097 (merged) ivas-float-update
• NONBE_1279_COUNTER_OVERFLOW - VA: issue 1279: Avoid possible overflow of counter st->Nb_ACELP_frames -> accept ⚠️ ported without switch in !1099 (merged) main / !2009 (merged) ivas-float-update; switch removed in !2049 (merged)
• NONBE_FIX_1277_EVS_DTX_HIGH_RATE_THRESHOLD - VA/Eri: issue 1277: Fix Mismatch in DTX high-rate threshold between EVS float and BASOP -> accept ⚠️ already cleaned out with !1414 (merged) + !1185 (merged) main / !2097 (merged) ivas-float-update
• NONBE_1231_BASOP_819_THRESHOLD_MASA2TOTAL - Nokia: add fix for precision limitation in comparison with masa2total energy ratio threshold to be aligned with BASOP -> accept ⚠️ N/A to BASOP, was a backport