[image_picker] Fixes an issue where videos could be wrongly picked with .jpg extension

[miguelpruivo]

Opened from #2860.

Fixes an issue where videos could be wrongly picked with .jpg extension.

Description

When picking videos on Android devices, it will return file names ended with .jpg extension, regardless of the file being actually a video. This requires a workaround implementation, such as opening a File descriptor on Flutter side and rename it to .mp4 again.

The issue happens because some URI paths doesn't have an extension and it was being extracted just by splitting the file name from . and getting the last part, which make it not quite reliable for some scenarios. Right now, I've updated the source to retrieve the extension based on the URI content.

As a note, this doesn't happen with all Android devices, but I can see it easily replicable with Samsung phones.

Related Issues

Fixes #52419

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[jb522185660]

how do you resolved it , I have get the image_picker: ^0.6.7+14,but it also return jpg