Infinite loop in ivas_core_enc_fx from FIX_2021
# Basic info
<!--- Add commit SHA used to reproduce -->
- Fixed point: c7ea1c011
# Bug description
There is an infinite loop introduced in `ivas_core_enc_fx` line 710 under the switch `FIX_2021_BANDWIDTH_EXTENSION_PROBLEM`:
```
FOR( int ts = 0; ts < CLDFB_NO_COL_MAX; i++ )
```
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issue