[clang] [clang] Add clang-format-check-format instead to CLANG_TEST_DEPS (PR #204908)

[Douglas Yung via cfe-commits]

dyung wrote:

> LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-win` running on `sie-win-worker` while building `clang` at step 7 "test-build-unified-tree-check-all".
> 
> Full details are available at: https://lab.llvm.org/buildbot/#/builders/46/builds/36892
> 
> Here is the relevant piece of the build log for the reference

@owenca Do you plan to address this failure somehow?

https://github.com/llvm/llvm-project/pull/204908