Asserts that a button with specific text is visible.
The Playwright page object
The text key (can be a fixture key or raw text)
Then I pw see button text "Submit" Copy
Then I pw see button text "Submit"
Then I pw see button text "buttons.saveKey" (fixture) Copy
Then I pw see button text "buttons.saveKey" (fixture)
Asserts that a button with specific text is visible.