Energy bursts in BWE region for MDCT-stereo @80kbps FB
# Basic info
<!--- Add commit SHA used to reproduce -->
- Float reference:
- Decoder (float):05f58f7271155ebaf12707893875076e32e8f07f
- Fixed point:
- Encoder (fixed):33cc021590282aacbc24c4fa7f72badf54bf6d7e
# Bug description
There are sudden energy bursts in what seem to be IGF frequency tiles for this particular item as can be seen in the spectrogram:

It should be noted however, that in general the differences between the two signals for the frequency region above 10kHz is rather large.
# Ways to reproduce
Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1192
<!-- Commandline or script -->
```bash
./IVAS_cod -stereo -max_band FB 80000 48 ap03a3s05_48.wav bit.192
./IVAS_dec_flt_ref stereo 48 bit.192 out.wav
```
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issue