Draft: [non-BE][split-non-BE][rend-non-BE][allow regression] Resolve "Usage of extract_l() with values out of range"

• Related issues:
• Requested reviewers:

Reason why this change is needed

• In some cases extract_l() returns a meaningless value, because the input value with a wider representation, exceeds the range of the narrower return value (overflow).

Description of the change

• Discover problematic usage of extract_l by placing assert calls.
• Provides fixes for all overflows found in test STV and LTV pipelines.

Affected operating points

• Any module using extract_l() is potentially affected, but the severity is likely not catastrophic, because if not it would had been noticed by other tests already.

In particular in the following functions problems were found:

• estDownmixGain_fx
• swb_pre_proc_fx
• spectral_balancer_fx16
• IGF_CalculateStereoEnvelope_fx
• GetTCXMaxenergyChange_fx
• res_bpf_adapt_ivas_fx
• ivas_core_dec_fx
• d_syn_filt_fx
• acelp_core_dec_fx
• acelp_fast_fx
• swb_tbe_enc_fx
• bw_detect_fx

• Regressions and Improvements STV

job	criteria	improvements	regressions
dec 0dB	MAX abs	1x 3515	1 x 231
	MLD	1x 0.6	7x <0.5
dec +10dB	MAX abs	2x > 1000	0
	MLD	3 x > 0.1	2x < 0.6
dec -10dB	MAX abs	1x > 1000	0
	MLD	1x > 3.9	26x < 1.01
enc 0dB	MAX abs	1 x > 1300	1x 57
	MLD	1x 2.4	0
enc +10dB	MAX abs	1x 2624	0
	MLD	0	1x 0.65
enc -10dB	MAX abs	0	0
	MLD	0	0

Closes #2493