[clang] AST: fix dependency calculation for TypedefTypes (#143291) The dependency from the type sugar of the underlying type of a Typedef were not being considered for the dependency of the TypedefType itself. A TypedefType should be instantiation dependent if it involves non-instantiated template parameters, even if they don't contribute to the canonical type. Besides, a TypedefType should be instantiation dependent if it is declared in a dependent context, but fixing that would have performance consequences, as otherwise non-dependent typedef declarations would need to be transformed during instantiation as well. This removes the workaround added in https://github.com/llvm/llvm-project/pull/90032 Fixes https://github.com/llvm/llvm-project/issues/89774
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