fix(frontend): add typechecks and fix existing type errors in frontend (#9336)

<!-- Clearly explain the need for these changes: -->
We want to be able to use typechecking and see errors before they occur.
This is a PR to help enable us to do so by fixing the existing errors
and hopefully not causing new ones.

### Changes 🏗️
- adds check to ci
- disables some code points
- fixes lots of type errors
- fixes a bunch of the stories

<!-- Concisely describe all of the changes made in this pull request:
-->

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  <!-- Put your test plan here: -->
  - [x] added types
  - [x] Ran some of the stories
  - [x] Asked all the relevant parties for manual checks

---------

Co-authored-by: SwiftyOS <craigswift13@gmail.com>

.github/workflows/platform-frontend-ci.yml

@@ -37,6 +37,25 @@ jobs:
         run: |
           yarn lint
 
+  type-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "21"
+
+      - name: Install dependencies
+        run: |
+          yarn install --frozen-lockfile
+
+      - name: Run tsc check
+        run: |
+          yarn type-check
+
   test:
     runs-on: ubuntu-latest
     strategy: