In the BASOP implementation of the end-frame LSF quantization in `lsf_end_enc_fx()`, there is an inconsistency in setting the absolute threshold for codebook-type decision logic between EVS in IVAS. In EVS, there is (https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/blob/main/lib_enc/lsf_enc_fx.c#L938) `abs_threshold = L_add( SFNETLOWLIMIT_WB, 0 );` while in IVAS there is (https://forge.3gpp.org/rep/sa4/audio/ivas-basop/-/blob/main/lib_enc/lsf_enc_fx.c#L1451) `abs_threshold = SFNETLOWLIMIT_WB / 2;` Is this correct or a bug? <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary.-->