Why does the state not change during testing after filling out the form?

Question

Unit testing

Sandbox
I have an App component with a state of { isCardAdded: false }.
If isCardAddedfalse, the form is shown. The form consists of one field and a button.
If you fill out the form correctly, it isCardAddedwill become correct and the message "Card added" will be displayed.
I am testing a component.
Initially there was a problem that I was simulating events on other elements. So I rewrote the test with React-testing-library to dig into the right nodes.
Now I don’t understand why after filling out the form correctly, the message “Card added” is not displayed. Help me please.