[clang][dataflow] Use smart pointer caching in unchecked optional accessor (#120249)

Part 2 (and final part) following
https://github.com/llvm/llvm-project/pull/120102
Allows users to do things like:

```
if (o->x.has_value()) {
  ((*o).x).value();
}
```
where the `->` and `*` are operator overload calls.

A user could instead extract the nested optional into a local variable
once instead of doing two accessor calls back to back, but currently
they are unsure why the code is flagged.

0 files changed, 0 insertions, 0 deletions