[clang] [clang-repl] [test] Make an XFAIL more precise (PR #70991)

[Martin Storsjö via cfe-commits]

mstorsjo wrote:

> > > > If you still need help reproducing or debugging the issue on our bot, please let me know.
> > > 
> > > 
> > > Thanks, much appreciated. Can you test if [mstorsjo at clang-repl-xfail](https://github.com/mstorsjo/llvm-project/commit/clang-repl-xfail) seems to run correctly in this environment? Otherwise I'll try to push it tomorrow and see how it fares on the bot.
> 
> It failed, but due to a typo in the XFAIL you added:
> 
> ```
> target={{.*}-ps4, target={{.*}-ps5
> ```
> 
> These should have balanced braces. If I add the missing braces, the test passes with an XFAIL on the bot.

Oh, oops - but thanks for checking and verifying with the typo fixed. I'll try to reland this change now then, with that fixed. Thanks again!

https://github.com/llvm/llvm-project/pull/70991