[Fix] (Review): scope the sample mask to a multisample target, version the sampled-set memo on completeness, clamp the mask word count, give the multisample placeholder every numeric domain, unwind the fixup revert one pass at a time, and bound the validator log

MobileGL/MG_IntegrationTest/CMakeLists.txt

@@ -59,6 +59,7 @@ add_executable(MobileGLIntegrationTest
     Scenarios/AsyncCompileScenario.cpp
     Scenarios/XfbAfterClipDistanceScenario.cpp
     Scenarios/UnwrittenPositionOutputScenario.cpp
+    Scenarios/SampleMaskScopeScenario.cpp
     Scenarios/ThreeChannelAttachmentScenario.cpp
     Scenarios/SnormAttachmentScenario.cpp
     Scenarios/PipelineFailureScenario.cpp