[clang] [analyzer] Refine default binding preservation in RegionStore (PR #189319)

[Donát Nagy via cfe-commits]

NagyDonat wrote:

The automatic CI failure message was a bit ominous after @steakhal's comment, but it is – of course – completely unrelated to this patch.

By the way, I have a subjective feeling that we are having more false positive CI alerts than e.g. one or two years ago. Did anyone else also notice something similar?

https://github.com/llvm/llvm-project/pull/189319