Bugfix MTE-4691 Launching context menu on iOS 15

[clarmso]

:scroll: Tickets

Jira ticket

:bulb: Description

ShareToolbarTests, ShareMenuTests, ShareLongPressTests fail on iOS 15 only because openNewTabAndValidateURLisPaste fails to open the context menu. https://storage.googleapis.com/mobile-reports/public/firefox-ios-M1/firefox-ios-iphone-iOS-15/result_236/firefox-ios/build/reports/index.html

A solution is to minimize the keyboard before long press on the address toolbar. This solution does not affect iOS 16, 17 and 18.

:movie_camera: Demos

Before	After

Demo

:pencil: Checklist

• [ ] I filled in the ticket numbers and a description of my work
• [ ] I updated the PR name to follow our PR naming guidelines
• [ ] I ensured unit tests pass and wrote tests for new code
• [ ] If working on UI, I checked and implemented accessibility (Dynamic Text and VoiceOver)
• [ ] If adding telemetry, I read the data stewardship requirements and will request a data review
• [ ] If needed, I updated documentation and added comments to complex code
• [ ] If needed, I added a backport comment (example @Mergifyio backport release/v120)

[mobiletest-ci-bot]

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Generated by :no_entry_sign: Danger Swift against aaca75a38381740d3c41f3b3cc35b6fdfb89f0de

[clarmso]

production has been using this charset without any issues.

[clarmso]

Opened a new PR: https://github.com/mozilla-mobile/firefox-ios/pull/27521