[clang] [clang-format] Stop breaking unbreakable strings in JS (PR #66168)

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sstwcw wrote:

> Another thing is that we need to get this fixed really soon. Another (safer and actually preferred) alternative is to revert the change and address problematic use cases before recommitting it, but I'm also fine with forward-fixing this as long as fixes don't require major changes that have potential for other problems to appear.

I see.  In that case, I added #66372.

However, why do you need it fixed so soon?  The latest release is
version 16.  And the string breaking stuff isn't even in the version 17
branch.


https://github.com/llvm/llvm-project/pull/66168