uSync.Forms: vite 8.3.1 bumps and TypeScript ignore

Repo: KevinJump/uSync.Forms

Merged the dependabot vite 8.2.2 → 8.3.1 PRs for both clients on v17/main (#61, #62); squash is disabled on the repo, so merge commits
Added a dependabot ignore for TypeScript major bumps in both npm projects, since @hey-api doesn't support TypeScript 7 yet (#63)
Checked v17 against v18 for a forward port: no forward-merge commit exists, so the baseline was the v18 CI/repo catch-up commit, and vite was the only outstanding change; the v17/v18 dependency differences are deliberate and stay
Forward merge of v17/main into v18/main (#64, merge commit so the next run has a baseline): -s ours to restore ancestry, then vite 8.3.1 and the TypeScript ignore carried by hand; v18 keeps its own backoffice, TypeScript and Umbraco pins