[clang] [clang][ExtractAPI] Ensure typedef to pointer types are preserved (PR #78584)

[Daniel Grumberg via cfe-commits]

daniel-grumberg wrote:

That and the typedef case before the pointer case. The pointer check would lead to extraneous desugaring in the fragments, i.e. you would get something like `struct Bar * value`, because the typedefs are also pointer types and therefore the typedef name would get bypassed in favor of the form "PointeeType *"

https://github.com/llvm/llvm-project/pull/78584