Commented Issue: [BUG] Weak handle contexts are leaked during explicit disposal of cached V8 objects [90]

When cached V8 objects are explicitly disposed during V8 context destruction, the weak states of their handles must be cleared and the associated weak callback contexts deleted.
Comments: Fixed in [Version 5.4.3](https://clearscript.codeplex.com/SourceControl/changeset/ba8bf459e44aab693d58c6df4a80bb481319e04f).