refactor: update edge-to-edge implementation

Author: naveensingh

app/src/main/kotlin/org/fossify/paint/activities/MainActivity.kt

@@ -163,7 +163,7 @@ class MainActivity : SimpleActivity(), CanvasListener {
 
     override fun onResume() {
         super.onResume()
-        setupToolbar(binding.mainToolbar, statusBarColor = getProperBackgroundColor())
+        setupTopAppBar(binding.mainToolbar, statusBarColor = getProperBackgroundColor())
 
         binding.apply {
             val isShowBrushSizeEnabled = config.showBrushSize

app/src/main/kotlin/org/fossify/paint/activities/SettingsActivity.kt

@@ -29,7 +29,7 @@ class SettingsActivity : SimpleActivity() {
 
     override fun onResume() {
         super.onResume()
-        setupToolbar(binding.settingsToolbar, NavigationIcon.Arrow)
+        setupTopAppBar(binding.settingsToolbar, NavigationIcon.Arrow)
 
         setupCustomizeColors()
         setupUseEnglish()