[clang] [clang-format] Fix a regression in dumping the config (PR #80628)

[Ben Hamilton via cfe-commits]

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@@ -1,5 +1,8 @@
+// RUN: clang-format -assume-filename=foo.m -dump-config | FileCheck %s
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bhamiltoncx wrote:

It looks like you reverted the lit test which just runs `clang-format -dump-config` without any other arguments. Is that what you wanted to do?


https://github.com/llvm/llvm-project/pull/80628