[fix]: Warn user when binding rest operator

[RaiVaibhav]

Fioxes: https://github.com/sveltejs/svelte/issues/6860

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Tests

• [x] Run the tests with npm test and lint the project with npm run lint

[RaiVaibhav]

Hey @tanhauhau can you check the PR and help me with the test, I ran my changes locally and I can see the warning when I am using the same component on repl but on test it says there is no warning.

[RaiVaibhav]

Therefore you need to move the validation into parse part.

Hey @baseballyama please check the changes in the test repo

[RaiVaibhav]

Actually existing warning checks are at the parse step. (constructor of Node) I still didn't think alternative implementing idea. (So I'm sorry if there is no alternative implementing way) but personally, this change seems like architecture breaking. (But we need to wait for maintainer's thoughts)

And 75 tests failed. I think there are actual failures so maybe you need to fix them.

Thank you for the response, most checks are failing because of the test runner change, I will check and fix this.

[tanhauhau]

Actually existing warning checks are at the parse step. (constructor of Node)

i've moved the validation from the compile/render-dom/wrappers/Element/Binding to compile/nodes/Binding

[RaiVaibhav]

Hey, @tanhauhau thank you for the update and refactoring :+1: