test(cli): add testcase for cli usage in a package with type: module

[dominikg]

Description

tests usage of cli in a package with "type":"module" in it's package.json.
This test covers reading vite.config.js with dynamic import, which is not covered by the regular cli testsuite.
see #5213

Additional context

The majority of this test is copy-paste of packages/playground/cli which isn't ideal, but editing these files on the fly would have been more complex.

I did verify that an error thrown from dynamicImport introduced in #5213 does fail in this testsuite.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
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