Here added action copy paste support.
When all action dependencies are scoped to copied instance new variable
nams are ussed.
When some any dependency is not scoped execution is removed from copied
prop.
Fixes https://github.com/webstudio-is/webstudio-builder/issues/1994
Here changed behavior when copy and paste without changing instance
selection. Now it works as duplicating and copy is inserted after
selection.
Added cmd+d and ctrl+d shortcut to do this with single press without
polluting clipboard.
Here fixed the case when copy pasted form looses state and give errors
on submit.
Immerhin now converted to esm to work in tests.
Added tests for instances copy paste plugin.
The new logic is copy data sources as is if they are bound to copied
instances.
The new computeExpressionsDependencies used to detect if expression
depends on data sources outside of copied instances scope.
Ivan Starkov