[clang] [Lifetime Safety] Highlight lifetimebound calls in alias chain diagnostics (PR #206337)

[via cfe-commits]

iitianpushkar wrote:

Hey @Xazax-hun @NeKon69 , I have updated the patch with the remaining asked changes. 
 - added `unnamed` param branch test
 - removed `prevExpr` variable
 - did `auto [FD, Args] = getFunctionCallInfo()` wherever applicable.
 
 Do let me know if anything else is needed, otherwise , can any of you now merge this PR ?

https://github.com/llvm/llvm-project/pull/206337