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BASOP assert in EVS encoder

Basic info

Bug description

When running the smoke test with the BASOP coded, there is a BASOP assert raised for the mode mono_b24_4_fb_cbr:

Screenshot_2025-11-27_at_13.43.49

This happens directly in the first frame. The smoke test uses the stv files, but cut from second 1 to 2, the normal stv mono signal does not triggger this.

Ways to reproduce

stv48c_1to2

./IVAS_cod -max_band fb 24400 48 stv48c_1to2.wav bit