Fix a bug in CONFIG_ATC_DCTX_ALIGNED(issue #187)
- The fix is a lossless change under CTC.
- The change only has an impact when reduced-tx-type-set is enabled. It reverts back to the intended design.
- The fixed design based on adopted CWG-C073 provides -1.27% AI YPSNR BD-rate and about -0.5% RA YPSNR BD-rate gains over the AVM-46c9dd51 (Overall Mandatory w/o B2) when reduced-tx-type-set is enabled in both anchor and test.