Disable LLVM stripping of libpythonbundle.so

{{cookiecutter.out_dir}}/android/app/build.gradle

@@ -63,6 +63,13 @@ android {
             signingConfig signingConfigs.debug
         }
     }
+
+    packagingOptions {
+        doNotStrip "*/arm64-v8a/libpython*.so"
+        doNotStrip "*/armeabi-v7a/libpython*.so"
+        doNotStrip "*/x86/libpython*.so"
+        doNotStrip "*/x86_64/libpython*.so"
+    }
 }
 
 flutter {