chore: get types tests running

[lishaduck]

PR Checklist

• Addresses an existing open issue: related to 🛠 Tooling: "Testing types with tsc and vue-tsc is an experimental feature." spam in tests #2398 & 🛠 Tooling: Disable Vitest --changed? #2423
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Trying to prove that one study right 😉
(In that amp made the first failing draft but now I wanna make it work by hand)

Note: Upstreaming "in-progress" at vitest-dev/vitest#9870.

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Project	Deployment	Actions	Updated (UTC)
flint	Ready	Preview, Comment	Mar 13, 2026 11:37pm

[lishaduck]

I'm sure there's a reason this is designed as-is, so I'm not thrilled with patching it, but this seems to work in CI at least.

[lishaduck]

There's quite a bit of drift, sounds to me like we should do #2296.

[mrazauskas]

This PR can be closed, I guess. See #2435 (review)