[clang-tidy] typeof(expression) being diagnosed as redundant parenthesis around expression

happens when running with `-checks='readability*'`.

e.g.:
```C
typeof(1) var;
```
clang-tidy generates the following for the above code:
```
warning: redundant parentheses around expression [readability-redundant-parentheses]
1 | typeof(1) var;
| ^ ~
|
```
I suspect this is because `typeof` (and `typeof_unqual`) is not being treated as a `UnaryExprOrTypeTrait`

I tried doing [this](https://github.com/aalmkainzi/llvm-project/commit/c86b54aae7459458daa588b522882e4fc21bf2cf), but it didn't work.

Start with the clang-tidy readability-redundant-parentheses check, reproducing the report with -checks='readability*' and the typeof(1) var; example. Trace how the check classifies typeof and typeof_unqual, then verify that the diagnostic no longer appears while ordinary redundant parentheses are still reported.

Written by the indexing model from the issue text.