[clang] [clang-format] Don't always break before << between string literals (PR #92214)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: 8fe39e64c0ef0a1aefce3c1187c5822343caeedd

https://github.com/llvm/llvm-project/actions/runs/9321579020

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/92214