Fix overly cautious regexp for = UseStringReplace

[blipper]

What's your motivation?

Make less cautious!

• Fixes UseStringReplace is overly cautious around the use of = #330

[timtebeek]

Thanks for adding this @blipper ! I've pushed a small fix to your test: it was missing the rewriteRun method invocation, so nothing was tested. I've also added two more Java SourceSpecs to check handling of the special cases outlined in #330. With that I think we're good to merge. :)

[timtebeek]

Remaining test failure caused by

• Fixes for type attribution and TypeUtils#isAssignableTo() rewrite#4427

Will pick that up separately; thanks again!

[timtebeek]

This was just released into https://github.com/openrewrite/rewrite-static-analysis/releases/tag/v1.15.0 ; thanks again!