Retry jest tests to avoid flakes slowing down PRs (#12051)

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

test/setupTests.ts

@@ -37,6 +37,11 @@ beforeEach(() => {
     });
 });
 
+// Retry to work around our flaky app & tests
+jest.retryTimes(2, {
+    logErrorsBeforeRetry: true,
+});
+
 // Very carefully enable the mocks for everything else in
 // a specific order. We use this order to ensure we properly
 // establish an application state that actually works.