Add missing part from IVAS_DEC_GetEditableParameters and adjust to be in line with float main.
- Link to issue in BASOP repo: #2134 (closed)
- Link to original MR in float repo: ivas-codec-pc/ivas-codec!1915 (merged)
- Requested reviewers: @weckbecker @vaclav
This implements the missing parts for ivas-float-update.