Run type check for all web app packages in CI (#22578)

* Fix incorrect usage of types pacakge

* Make platform packages properly expose their type definitions

* Have Boards, Channels, and Playbooks get types from platform packages properly

* Run type check for all web app packages in CI

* Fix incorrect job name

.github/workflows/channels-ci.yml

@@ -80,7 +80,7 @@ jobs:
           npm run mmjstool -- i18n clean-empty --webapp-dir ./src --mobile-dir /tmp/fake-mobile-dir --check
           npm run mmjstool -- i18n check-empty-src --webapp-dir ./src --mobile-dir /tmp/fake-mobile-dir
           rm -rf tmp
-  check-type:
+  check-types:
     runs-on: ubuntu-22.04
     defaults:
       run:
@@ -109,12 +109,11 @@ jobs:
           make node_modules
           # make channels/e2e/playwright/node_modules
       - name: ci/lint
-        working-directory: webapp/channels
         run: |
           npm run check-types
   tests:
     runs-on: ubuntu-22.04
-    needs: [check-type, check-i18n, check-lint]
+    needs: [check-types, check-i18n, check-lint]
     permissions:
       checks: write
       pull-requests: write