Allow analyze warnings in CI checks

Updates the checks workflow to make `flutter analyze` non-blocking by using `continue-on-error` and a step ID, then emits a GitHub Actions warning when analysis fails. This keeps visibility into analyzer issues without failing the overall package check.

Author: guidezpl

.github/workflows/checks.yml

@@ -37,9 +37,15 @@ jobs:
         working-directory: packages/${{ matrix.package }}
 
       - name: Analyze Dart code
+        id: analyze
+        continue-on-error: true
         run: flutter analyze
         working-directory: packages/${{ matrix.package }}
 
+      - name: Report analysis warnings
+        if: steps.analyze.outcome == 'failure'
+        run: echo "::warning::Flutter analyze reported issues; continuing without failing the check."
+
       - name: Ensure Dart code is formatted correctly
         run: dart format --set-exit-if-changed .
         working-directory: packages/${{ matrix.package }}