refactor(core): use the event loop proxy to send updater events

[lucasfernog]

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• I have added a convincing reason for adding this feature, if necessary

Other information

[FabianLars]

Oh wow, that escalated 😅 But i love the change(s).

[lucasfernog]

We could extend this work to allow an user event type and expose the proxy, but it's a massive breaking change (adding an extra generic type on everything that references R: Runtime (I started doing it and it is possible).