fix(android): fixed bug where video would not be visible after remount and change of drm source

[YangJonghun]

Summary

fixed bug where video would not be visible after remount and change of drm source

Motivation

onAttachedToWindow called when component remount.
and initialization of player with drm prop have networking delay.
these situations cause the initializePlayer function to be called again while it is running.
overridden onAttachedToWindow code was written with PR #426.
in that time this code needed, but current code doesn't need this behavior. (it can be replaced by an action called inside setSrc)

Changes

• do not initialize player when view attached to window
• remove overridden Android native lifecycles (onDetachedFromWindow, onAttachedToWindow)

Test plan

• prepare real device and two dash source with valid drm config.
• change source and drm prop with user action(changeSource function changes source)

<Button title={'change source'} onPress={changeSource} />
<Video
    // for enforce remount without complicated component hierarchy
    key={source.uri}
    source={source}
    drm={drm}
 />

[freeboub]

This change shall replace following PR: https://github.com/react-native-video/react-native-video/pull/3300/files
For me the change make sens and is OK.
It would be interesting to have more tester for this PR ...