packed struct fixes #16611
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packed struct fixes #16611
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prefer marking too few undefined bits, rather than too many that may overwrite nearby values. partially resolves ziglang#15337
When acessing a packed struct member via a byte aligned ptr (from the optimisation in Sema.structFieldPtrByIndex()) the codegen must apply the parent ptr packed_offset in addition to the field offset itself. resolves ziglang#16609
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closes #16609
and partially addresses #15337