Set actionMenuTextColor in ActionBarThemeCommon

Introduce ActionBarThemeCommon which sets android:actionMenuTextColor to
the textColorPrimary and is exteneded by all varians of ActionBarTheme.

Bug: 278312486
Bug: 270525971
Test: build and install DocumentsUIGoogle
Test: atest DocumentsUIGoogleTests
Change-Id: I2ab9fdb1f61d3b855e7d71c6471d517f7e043f22