Go ahead and disable type stripping during testing entirely

We'll need to support this soon, since it'll end up being default on
everybody's machine, but right now it breaks a bunch of stuff and it's
not an immediately useful feature.

.github/workflows/ci.yml

@@ -19,6 +19,12 @@ jobs:
           cache: 'npm'
           cache-dependency-path: 'package.json'
 
+      # The new type stripping breaks our existing ts-node testing
+      # set up, so disable it:
+      - name: Set Node Options for Node 23
+        if: startsWith(matrix.node-version, '23')
+        run: echo "NODE_OPTIONS=--no-experimental-strip-types" >> $GITHUB_ENV
+
       - run: npm install
       - run: npm run ci-tests