fix: update the preview images

mobile/android/app/src/main/kotlin/io/ente/photos/EnteAlbumsWidgetProvider.kt

@@ -180,8 +180,7 @@ class EnteAlbumsWidgetProvider : HomeWidgetProvider() {
                                                         val drawable =
                                                                 ContextCompat.getDrawable(
                                                                         context,
-                                                                        R.drawable
-                                                                                .ic_home_widget_default
+                                                                        R.drawable.ic_albums_widget
                                                                 )
                                                         val bitmap =
                                                                 (drawable as BitmapDrawable).bitmap

mobile/android/app/src/main/kotlin/io/ente/photos/EnteMemoryWidgetProvider.kt

@@ -181,7 +181,7 @@ class EnteMemoryWidgetProvider : HomeWidgetProvider() {
                                                                 ContextCompat.getDrawable(
                                                                         context,
                                                                         R.drawable
-                                                                                .ic_home_widget_default
+                                                                                .ic_memories_widget
                                                                 )
                                                         val bitmap =
                                                                 (drawable as BitmapDrawable).bitmap

mobile/android/app/src/main/kotlin/io/ente/photos/EntePeopleWidgetProvider.kt

@@ -180,8 +180,7 @@ class EntePeopleWidgetProvider : HomeWidgetProvider() {
                                                         val drawable =
                                                                 ContextCompat.getDrawable(
                                                                         context,
-                                                                        R.drawable
-                                                                                .ic_home_widget_default
+                                                                        R.drawable.ic_people_widget
                                                                 )
                                                         val bitmap =
                                                                 (drawable as BitmapDrawable).bitmap

mobile/android/app/src/main/res/layout/albums_widget_layout.xml

@@ -65,7 +65,7 @@
             android:id="@+id/widget_placeholder"
             android:layout_width="120dp"
             android:layout_height="120dp"
-            android:src="@drawable/ic_home_widget_default"
+            android:src="@drawable/ic_albums_widget"
             android:scaleType="fitCenter" />
 
         <TextView

mobile/android/app/src/main/res/layout/memory_widget_layout.xml

@@ -65,7 +65,7 @@
             android:id="@+id/widget_placeholder"
             android:layout_width="120dp"
             android:layout_height="120dp"
-            android:src="@drawable/ic_home_widget_default"
+            android:src="@drawable/ic_memories_widget"
             android:scaleType="fitCenter" />
 
         <TextView

mobile/android/app/src/main/res/layout/people_widget_layout.xml

@@ -65,7 +65,7 @@
             android:id="@+id/widget_placeholder"
             android:layout_width="120dp"
             android:layout_height="120dp"
-            android:src="@drawable/ic_home_widget_default"
+            android:src="@drawable/ic_people_widget"
             android:scaleType="fitCenter" />
 
         <TextView