Migration fix for new query type

[briangann]

This PR is to fix the panel migrations for the non-query created clock panels. It will also cleanup the (angular) configs if they are found outside of the config block.

Other modifications:

• Forces yarn V1
• Updates to node 20
• Bumps min Grafana version to 8.3+ (was 8.0)

TODO:

• Migrates old panels and cleans up
• Updates create-plugin changes
• Adds basic playwright config (simple setup)

[CLAassistant]

All committers have signed the CLA.

[briangann]

almost ready with this one, the migration tests ironed out some issues, but still need to test some real instances with dashboards that are throwing the error, and also with query-enabled clocks.

[briangann]

we'll need to update the docs in another PR, would like to get this fix out the door asap.

[briangann]

Fixes #189
Fixes #186