[clang] [Clang][analyzer] replace Stmt* with ConstCFGElementRef in SymbolConjured (PR #128251)

[via cfe-commits]

https://github.com/isuckatcs requested changes to this pull request.

I didn't have enough time to check the whole patch, I'll get back to it later.

The general patterns seems to be that when a conjured symbol is created, it's always the reference to the current CFG element that is passed as the source statement instead of some other statement that was passed in the past. 

I think every place, where we conjure a symbol should be double checked, so that we make sure we pass the CFG element reference to the correct statement, that actually conjured the value.

https://github.com/llvm/llvm-project/pull/128251