Decoder crash for OMASA ISM3_2TC at 64kbps FER in ivas_mdct_core_invQ_fx()
# Basic info
<!--- Add commit SHA used to reproduce -->
- Encoder (float): d18cbee3
- Decoder: 8f97e97c
# Bug description
The fixed point decoder crashes with an assert for the [complexity job:](https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/jobs/339893#L2725)
```bash
Assertion failed: (NE_16( st->BER_detect, 1 )), function ivas_mdct_core_invQ_fx, file ivas_mdct_core_dec.c, line 1235.
```

# Ways to reproduce
Bitstream: [ltv48_OMASA_3ISM_2TC_OMASA_ISM3_2TC_b64_wb_cbr_fer_ep_10pct_fer_g192.192.zip](/uploads/225f96e6b996fddc749c0bc18cb9537c/ltv48_OMASA_3ISM_2TC_OMASA_ISM3_2TC_b64_wb_cbr_fer_ep_10pct_fer_g192.192.zip)
```bash
IVAS_cod -ism_masa 3 1 ltv48_OMASA_3ISM_1TC_ISM1.csv ltv48_OMASA_3ISM_1TC_ISM2.csv ltv48_OMASA_3ISM_1TC_ISM3.csv ltv48_OMASA_3ISM_1TC.met -max_band swb 64000 32 ltv48_OMASA_3ISM_1TC_32_OMASA_ISM3_1TC.pcm bit
eid-xor -vbr -fer bit ep_10pct_fer.g192 bit_err
IVAS_dec BINAURAL 16 bit_err out.wav
```
issue