Capture/Replay: Corretly reset the UnpackAlignment at end of MEC Direcly setting the value doesn't set the relevant dirty state, use the appropriate setter call instead. This fixes the reported difference between the UnpackAlignment value stored in the trace and the one recorded ruring validation for MEC. Bug: angleproject:7564 Bug: angleproject:7180 Change-Id: Ic931cac9b7e33519e992ae55ee5cab2adb2958ca Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4063892 Commit-Queue: Gert Wollny <gert.wollny@collabora.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com>