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Nate authored
fixes #87061 It doesn't matter whether I'm using Google Chrome, VS Code, Discord, or a Terminal window: any time a text cursor is blinking, it means that the characters I type will show up there. And this isn't limited to text fields: if I repeatedly press `Tab` to navigate through a website, there's a visual indicator that goes away if I click away from the window, and it comes back if I click or `Alt+Tab` back into it. <details open> <summary>Example (Chrome):</summary>  </details> <details open> <summary>This PR adds the same functionality to Flutter apps:</summary>  </details>