After clicking the find button we need to wait for the input field to
appear before we try to type in it, but instead we were waiting for the
button to appear. However, the button is always present, so the current
`waitForSelector` call is basically a no-op, and this can cause the
integration tests to fail intermittently if we continue before the
input field is actually visible.
This appears to be due a typo first introduced in commit
d10da907dac86c103b787127110a59aed82c7aaa that has been copy/pasted.
This commit fixes the issue by waiting for the input field to be visible
before we continue typing in it.
64a2d708f9