Fix for 3gpp issue 935: Decoder crash for multi-channel and ISM,...

Fix for 3gpp issue 935: Decoder crash for multi-channel and ISM, BINAURAL_ROOM_REVERB output with specific renderer configuration files

[x] Reason for crash:
Issue is related to division by 0 in response_step_limit_fx() for pTarget_color_L buffer values.
These are calculated using pAcoustic_dsr buffer values of IVAS_ROOM_ACOUSTICS_CONFIG_DATA handle.
However, for the configuration that is given values are very small.
Even with Q31, many of the values are becoming zero which eventually makes pTarget_color_L values zero.
Check is added to address this condition.