fix(ci): use npm exec for TypeScript type check

npx --prefix doesn't forward args correctly to tsc, causing it
to print help text and exit 1. npm exec with -- separator works.

Author: belyaev-dev

.github/workflows/ci.yml

@@ -90,4 +90,4 @@ jobs:
         run: go vet ./...
 
       - name: TypeScript type check
-        run: npx --prefix web tsc --noEmit
+        run: npm --prefix web exec tsc -- --noEmit