use the system's native file picker

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https://stackoverflow.com/a/62455224

the custom one sucks, it always shows an outdated state of your file system and the refresh button sometimes doesnt fix it. i have no idea why they would bother to create a custom file picker when the OS already has one

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looks like this is already a thing but not available on linux

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https://youtrack.jetbrains.com/issue/IJPL-173565/Use-native-file-choosers-on-Linux