[clang] [clang-format] Handle requires clause following a pointer type (PR #142893)

[Björn Schäpers via cfe-commits]

https://github.com/HazardyKnusperkeks approved this pull request.

For all sane code this works. Although there are valid codes where a star can preceed a requires expression.

https://github.com/llvm/llvm-project/pull/142893