dillon1000/react

[Fizz] handle throwing after abort during render (#30730)

It is possible to throw after aborting during a render and we were not
properly tracking this. We use an AbortSigil to mark whether a rendering
task needs to abort but the throw interrupts that and we end up handling
an error on the error pathway instead.

This change reworks the abort-while-rendering support to be robust to
throws after calling abort