[SLP]Recalculate cleared deps for all cancelled copyable elements
Deps of a cancelled copyable element were recalculated only for
control-dependency nodes; a speculatable one stayed unschedulable and
deadlocked the final scheduling. Recalculate unconditionally.
Fixes #216544
Reviewers:
Pull Request: https://github.com/llvm/llvm-project/pull/216734