Resolve "IVAS_REND_Open: Mismatch float vs. BASOP for Split Rendering"

• Related issues: #2645 (closed)
• Requested reviewers: @multrus

Reason why this change is needed

Two of the initialization-loops are different between BASOP and Float wrt split rendering

Description of the change

Implementation is aligned

Affected operating points

All is BE. Values of the constants remain the same, now expressed the same way as in the float implementation.

Closes #2645 (closed)