disables lazy context propagation in oss to help determine if it is
causing bugs in startTransition. Will reenable after cutting a canary
release with this flag disabled

Reverts #31403 to reenable lazy context propagation

The disabling was to produce a build that could help track down whether
this flag is causing a possibly related bug in transitions but we don't
intend to disable it just fix forward once we figure out what the
problem is

## Summary

While fixing ref lifecycles in hidden subtrees in
#31379, @rickhanlonii noticed that
we could also add more unit tests for other types of tags to prevent
future regressions during code refactors.

This PR adds more unit tests in the same vein as those added in
#31379.

## How did you test this change?

Verified unit tests pass:

```
$ yarn
$ yarn test ReactFreshIntegration-test.js
```