[clang-tools-extra] [clang-tidy] rewrite matchers in modernize-use-starts-ends-with (PR #112101)

[Julian Schmidt via cfe-commits]

5chmidti wrote:

Note that his is not an NFC due to the change in what method may be found first, but given that it's quite out there to have 2+ of `{'starts_with',  'startsWith', 'startswith'}` in one class hierarchy, which is how the non-NFC part could be observed. Because of this I think this does not need a release note, thoughts?

https://github.com/llvm/llvm-project/pull/112101