PressMethod is not called in UButton::RebuildWidget()

The void function UButton::RebuildWidget() does not call PressMethod when rebuilding the widget.

Tested  4.19.2 (CL- 4033788), 4.20.3 (CL - 4369336), 4.21 (CL - 4537669), 4.22 (CL - 4531805)

1. Navigate to Button.cpp 
2. Inspect the void function UButton::RebuildWidget()

Result: PressMethod is not being rebuilt.

Expected: PressMethod would be called when UButton::RebuildWidget() is called.