Fix LFS cache bug: always run git lfs checkout after cache restore

On cache hit, `git lfs pull` was skipped entirely. Since `git lfs pull`
performs both `git lfs fetch` (download objects) and `git lfs checkout`
(replace pointer files with actual content), skipping it on cache hit
meant LFS pointer files were never replaced in the working tree. MATLAB
then tried to read ~130-byte pointer text as binary data, causing 12
test failures and a multi-hour hang on binary_pop_snapread_wrapperTest.

Fix: add an always-run `git lfs checkout` step after cache restore.
Also add timeout-minutes: 120 as a safety net against future hangs.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Kkuntal990

.github/workflows/ci.yml

@@ -23,9 +23,10 @@ jobs:
   # This workflow contains a single job called "build"
   build:
     # The type of runner that the job will run on
-    runs-on: 
+    runs-on:
       labels: ubuntu-latest-m
     continue-on-error: true
+    timeout-minutes: 120
 
     strategy:
       matrix:
@@ -56,6 +57,9 @@ jobs:
         if: steps.cache.outputs.cache-hit != 'true'
         run: git lfs pull
 
+      - name: Git LFS Checkout
+        run: git lfs checkout
+
       # Add virtual display support for graphical tests
       - name: Setup Xvfb for virtual display
         run: |