Update ErrorBoundary_test.js

[cardosource]

I changed the check from expect(component.getElement()).toBe(null); to expect(component.isEmptyRender()).toBe(true);.

Related Issue

Proposed Changes

• Updated the test to better reflect the expected behavior of the ErrorBoundary.
• Ensured the test verifies that nothing is rendered when there are no errors.
• Improved clarity of the test's intention regarding rendering absence.