chore(android): move contentStartTime into source prop (#4160)

examples/basic/src/constants/general.ts

@@ -12,7 +12,7 @@ import {Platform} from 'react-native';
 // This constant allows to change how the sample behaves regarding to texts selection.
 // You can change it to change how selector will use tracks information.
 // by default, index will be displayed and index will be applied to selected tracks.
-// You can also use LANGUAGE or TITLE 
+// You can also use LANGUAGE or TITLE
 export const textTracksSelectionBy = SelectedTrackType.INDEX;
 
 export const isIos = Platform.OS === 'ios';