Investigate and Fix Issues Related to R8 Code Shrinking & Optimization

[alperozturk96]

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We need to enable and properly configure R8 optimization in the Android build pipeline to reduce APK size and improve runtime performance. Currently, R8 may not be fully enabled or lacks the necessary ProGuard/R8 rules, which can result in missing classes, runtime crashes, or inefficient code shrinking.

https://developer.android.com/topic/performance/app-optimization/enable-app-optimization

[alperozturk96]

@mahibi Did you come across any problem when you enable:

isMinifyEnabled = true
isShrinkResources = true

these?

[mahibi]

@mahibi Did you come across any problem when you enable:

isMinifyEnabled = true
isShrinkResources = true

these?

yes, see https://github.com/nextcloud/talk-android/issues/5653