Add support for React Native 0.76 (#3109)

## Description

Updates the Fabric Example app to React Native 0.76
Adapts library to compile with React Native 0.76

(There are _some_ changes in `yarn.lock` due to me recreating the app
from scratch, I was getting random babel errors, so there must have been
some missed upgrade steps in the past and this seemed quicker than
trying to finding the issue)

## Test plan

Test the Fabric Example app

---------

Co-authored-by: Tomek Zawadzki <tomekzawadzki98@gmail.com>

FabricExample/.gitignore

@@ -71,4 +71,4 @@ yarn-error.log
 !.yarn/plugins
 !.yarn/releases
 !.yarn/sdks
-!.yarn/versions
+!.yarn/versions