[mlir][spirv] Support poison index when converting vector.insert/extract#125560

andfau-amd merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

andfau-amd:124162-CompositeExtractInsert-poisonandfau-amd/llvm-project:124162-CompositeExtractInsert-poisonCopy head branch name to clipboard