fix(autocompletion): filter out Restrict for sqlserver

[Jolg42]

Closes #942

[janpio]

Would be great if the PR would also require a test update :D

[Jolg42]

I have no idea how to test that one at the moment though 😅 It's a different behavior than all the tests we have.

[janpio]

Depending on provider, we expect different auto completions for onUpdate and onDelete?

[Jolg42]

Yes and that is tested https://github.com/prisma/language-tools/blob/main/packages/language-server/src/test/completion.test.ts#L982:L1076

[janpio]

But should that test then not have failed before for SQL Server?
Or am I misunderstanding the PR and the issues it fixes?

[Jolg42]

I added this "recently" "insertText": "onDelete: ${1|Cascade,Restrict,NoAction,SetNull,SetDefault|}", and this is something we don't know how to test as of today, this PR removed it.

[Jolg42]

So now there is only one auto-completion code-path for onDelete/onUpdate

[janpio]

Ok then I don't even understand or know what that does really.