API_LEVEL_ACTUAL field removed in newer version of androidx.test.uiautomator

This field has been removed in recent commit :
https://cs.android.com/androidx/platform/frameworks/support/+/9401a648e44ba8c715d552a6fd6e84eca099b0ef:test/uiautomator/uiautomator/src/main/java/androidx/test/uiautomator/UiDevice.java;dlc=04a8195c39e0eb3f77b143c71ed0327c3ad63e5c

We should consider removing the usage of this field in the repo.

appium-uiautomator2-server/app/src/main/java/io/appium/uiautomator2/model/internal/CustomUiDevice.java

Line 74 in 28e0d4e

    
           this.API_LEVEL_ACTUAL = getField(UiDevice.class, FIELD_API_LEVEL_ACTUAL, Device.getUiDevice());

Would you mind creating a PR for it?

@mykola-mokhnach
Sure I'd love to help, just want to confirm, removing the usage of API_LEVEL_ACTUAL will make it not support android api level 23 anymore because I plan to simplify the following code. Does it look good for you ?

https://github.com/appium/appium-uiautomator2-server/blob/master/app/src/main/java/io/appium/uiautomator2/utils/AXWindowHelpers.java#L106

I would rather simply change the used constant to Build.VERSION.SDK_INT, like Google did. There is no reason for me to cut lower APIs support