fix(edt): Invert the shadow colors in EDT

In EDT, we would like to invert the view shadow color to avoid the
low contrast issue when having a black view on top of a black
background.

Bug: 438631202
Bug: 436294586
Test: manually. attach screenshot to the bug
Flag: android.view.accessibility.force_invert_color
Change-Id: I67ed8ab9b3a5570d22299839e29988780305911a