[Regression2553] Audible spike on channel 7 - OSBA 3ISM+HOA2
# Basic info
<!--- Add commit SHA used to reproduce -->
- Fixed point:
- Encoder (fixed): 73dd51941
- Decoder (fixed):
# Bug description
Audible spike on decoder output channel 7. Time-domain comparison shows the BASOP encoder produces large-amplitude transients that are not present in the Float reference.
{width=900 height=507}
# Ways to reproduce
<!-- Commandline or script -->
_+10dB testcase_
```bash
IVAS_cod -ism_sba 3 2 scripts/testv/ltv48_OSBA_1ISM_HOA2_ISM1.csv scripts/testv/ltv48_OSBA_2ISM_HOA2_ISM2.csv scripts/testv/ltv48_OSBA_3ISM_HOA2_ISM3.csv scripts/switchPaths/sw_13k2_512k.bin 48 scripts/testv/ltv48_OSBA_3ISM_HOA2_+10dB.wav output.192
IVAS_dec -fr 20 EXT 32 output/output.192 output/output.wav
```
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issue