[clang] [clang] Increase the default expression nesting limit (PR #104717)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

Sorry about the delayed response.. gmail decided that reviews were spam and so I didn't notice a whole lot of email until I thought to ask myself why the community reviews seemed so quiet lately. :-D

I'm going to revert the changes entirely until we can figure out a better way forward. The test is obviously quite brittle as it stands, but also, why are we eating up *so much* stack space for parsing brackets?

https://github.com/llvm/llvm-project/pull/104717