[polly] [Polly] Materialize escaping scalars from empty-domain statements as poison (PR #220008)

[Shikhar Jain via llvm-commits]

ShikharJ-Corp wrote:

> [#220008 (comment)](https://github.com/llvm/llvm-project/pull/220008#issue-5301994143)
> 
> > This is done by simply registering the SAI of escpaing scalar within ScopBuilder::buildEscapingDependences.
> 
> @ShikharJ-Corp The PR's summary that will be used as commit message does not apply anymore. Can you update it before I land?

Done.. 

https://github.com/llvm/llvm-project/pull/220008