[9.4.2]Images cannot be sent on iOS 15.4.1, but there is no issue on iOS 18.0

[Ganzkiller]

I am using the SDK version 9.4.2. On iOS 15.4.1, images cannot be sent, but there is no issue on iOS 18.0. The specific behavior is as follows: the photo album can be opened normally, but after selecting an image and clicking "Send", no content is displayed in the Intercom chat box. The same issue occurs when selecting the GIF button to send a GIF.

[Ganzkiller]

After my testing, the latest SDK version that supports normal image sending is 9.1.1. Starting from version 9.2.0, image sending no longer works on iOS 15.4.1. Version 9.2.0 of the Flutter Intercom SDK corresponds to version 18.2.0 of the Intercom iOS native SDK. I noticed that the release notes for this (iOS 18.2.0) version include the line: "Improvements to the photo previewer." I suspect that the changes made for this improvement are the cause of the issue.