LSP VSCode: Linter doesn't complain when using previewFeatures = ["multiSchema"] but not including @@schema on models / enums

[gruckion]

TODO

Description and expected behavior
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In a prisma schema if you use previewFeatures multiSchema if you do not use @@schema on a model you will get a linter warning. If you are using multiSchema then every model / enum needs to specify which schema it belongs too. For those not similar with multi schema.

In the *.zmodel file if you use the multiSchema preview feature and do not include @@schema the VSCode plugin does not warn you.

YOU DO get a warning still when you try to generate the schema so it's not the end of the world.

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Environment (please complete the following information):

• ZenStack version: 2.0.0-beta.8
• Prisma version: 5.2.0
• Database type: Postgresql

Additional context
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