build: don't fail cypress on unhandled exception (#4122)

cypress/support/e2e.ts

@@ -50,3 +50,9 @@ beforeEach(() => {
     res.continue()
   })
 })
+
+Cypress.on('uncaught:exception', (_err, _runnable) => {
+  // returning false here prevents Cypress from
+  // failing the test
+  return false
+})