Enable volto-slate test suite via Vitest multi-project config

[Abhishek-17h]

Closes #7892

[wesleybl]

It's best to have a coverage configuration per project.

[davisagli]

Maybe it should be obvious, but I'm not sure I understand the overall strategy here. Why did you add a multi-package configuration in packages/volto/vitest.config.mjs, instead of having separate configurations in packages/volto/vitest.config.mjs and packages/volto-slate/vitest.config.mjs?

[Abhishek-17h]

@davisagli As we know many of the volto-slate dependencies come from Volto. If we create a separate configuration for volto-slate, there are a lot of dependency issues. I looked at both approaches, and maintaining a single configuration for Volto using Vitest multi-project configuration was the better choice. If the Volto team wants a separate configuration for volto-slate, I am also ready to do that.

[davisagli]

@Abhishek-17h I'm ok with doing it this way if it's simpler. Thank you for taking care of it!

[wesleybl]

@davisagli I think this merge didn't work correctly. There are changes here that aren't in the main. For example, the modifications in https://github.com/plone/volto/pull/7903/changes#diff-69d75bb059d226e4c2cba44c6ab3b76e7f0dfebdcd3f45ed554ba292991ca7c8

[wesleybl]

@davisagli I think this merge didn't work correctly. There are changes here that aren't in the main. For example, the modifications in https://github.com/plone/volto/pull/7903/changes#diff-69d75bb059d226e4c2cba44c6ab3b76e7f0dfebdcd3f45ed554ba292991ca7c8

ops I checked the wrong file.