Replace shift icons with white ones and use normal color filter (#173)

app/src/main/java/org/dslul/openboard/inputmethod/keyboard/KeyboardView.java

@@ -611,7 +611,7 @@ public class KeyboardView extends View {
                     || keyboard.mId.mElementId == KeyboardId.ELEMENT_ALPHABET_AUTOMATIC_SHIFTED
                     || keyboard.mId.mElementId == KeyboardId.ELEMENT_ALPHABET_SHIFT_LOCK_SHIFTED
             )
-                icon.setColorFilter(mColors.getAccent(), PorterDuff.Mode.SRC_ATOP); // todo: switch to accentColorFilter after changing keyboard symbols to white icons
+                icon.setColorFilter(mColors.getAccentColorFilter());
             else
                 icon.setColorFilter(mColors.getKeyTextFilter()); // key text if not shifted
         } else if (key.getBackgroundType() != Key.BACKGROUND_TYPE_NORMAL) {

app/src/main/res/drawable-v31/sym_keyboard_shift_locked_lxx_dark_system_accent.xml

@@ -1,3 +1,3 @@
 <?xml version="1.0" encoding="utf-8"?>
 <bitmap xmlns:android="http://schemas.android.com/apk/res/android"
-    android:src="@drawable/sym_keyboard_shift_locked_lxx_dark" android:tint="@color/icon_tint_system_accent_lxx_dark" />
+    android:src="@drawable/sym_keyboard_shift_locked_lxx_light" android:tint="@color/icon_tint_system_accent_lxx_dark" />

app/src/main/res/drawable-v31/sym_keyboard_shift_locked_lxx_light_system_accent.xml

@@ -1,3 +1,3 @@
 <?xml version="1.0" encoding="utf-8"?>
 <bitmap xmlns:android="http://schemas.android.com/apk/res/android"
-    android:src="@drawable/sym_keyboard_shift_locked_lxx_dark" android:tint="@color/icon_tint_system_accent_lxx_light" />
+    android:src="@drawable/sym_keyboard_shift_locked_lxx_light" android:tint="@color/icon_tint_system_accent_lxx_light" />