BASOP porting MR 365 - Port MR 2208 from float - 20250811 cleanup

Basic Info

• Original merge request in float repo: ivas-codec-pc/ivas-codec!2208 (merged)

Cleanup of the following switches, as decided in https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/wikis/Meetings/Reports/2025-08-05%20Technical%20Matters

BE

• -

Non-BE

• NONBE_FIX_TCX5_INTERLEAVING_FOR_FS_IN_UNEQUAL_FS_OUT - FhG: apply correct TCX5 grouping/interleaving when input_fs != output_fs -> accept ⚠️ already cleaned out with !2096 (merged) / !2097 (merged)
• NONBE_1339_FIXOSBA_EXT_LOUDNESS - FhG: issue 1339: apply scaling with EXT output in OSBA high-BR mode -> accepting next switch will remove this ⚠️ moved under NONBE_1894_OSBA_SCALING which was cleaned up in !2178 (merged) / !2180 (merged)
• NONBE_1352_HARMONIZE_OSBA_LOUDNESS - FhG: do not scale OSBA inputs by 0.5 any more -> accept