Find on Page `X` button does not clear input

Steps to repro

1. Open Orion mobile
2. Navigate to any website
3. Select "Find on Page" from the website settings menu
4. Type anything
5. Press the X button
6. Observe that the text is not cleared (and the prompt is not dismissed)

Expected behavior

Input is cleared[, and clicking X when there's no input closes the search dialog].

I only expect the prompt to be dismissed because X traditionally closes things unless it's within a small grey circle, as is consistent with the rest of iOS chrome. Safari uses Done to dismiss but no X to clear.