Add error handling to TinyTeX pattern download

Gracefully exit with warning if TinyTeX daily release download fails.
This prevents workflow failure when daily release hasn't been published yet.

Author: cderv

.github/workflows/verify-tinytex-patterns.yml

@@ -22,7 +22,10 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
-          gh release download daily --repo rstudio/tinytex-releases --pattern "regex.tar.gz"
+          if ! gh release download daily --repo rstudio/tinytex-releases --pattern "regex.tar.gz"; then
+            echo "::warning::Failed to download TinyTeX daily release - may not be published yet"
+            exit 0
+          fi
           tar -xzf regex.tar.gz
           echo "✓ Downloaded and extracted regex.json"