fix: missing paste after permission dialog in iOS

[chrisirhc]

Fixes issue specified in https://github.com/AppFlowy-IO/AppFlowy/issues/7214#issuecomment-2600791861 :

When I do copy and paste http url, a system asks whether to "Allow a Paste from Safari". If I click Allow, nothing happens. However, subsequent pastes work.

This loss of selection is when the following dialog appears and after the user taps "Allow" (but before selection is resumed in the Applflowy app):

This is a naive fix intended to demonstrate the issue for discussion, and it requires cleanup/refactor before landing.

Fixes https://github.com/AppFlowy-IO/AppFlowy/issues/7284

[CLAassistant]

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