TF-1205: rename class

android/app/build.gradle

@@ -41,7 +41,7 @@ android {
     defaultConfig {
         applicationId "com.linagora.android.teammail"
         minSdkVersion 19
-        targetSdkVersion 33
+        targetSdkVersion 32
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         // The number of method references in a .dex file cannot exceed 64K

android/app/src/main/AndroidManifest.xml

@@ -54,11 +54,16 @@
               android:name="io.flutter.embedding.android.NormalTheme"
               android:resource="@style/NormalTheme"
               />
+
             <!-- Displays an Android View that continues showing the launch screen
                  Drawable until Flutter paints its first frame, then this splash
                  screen fades out. A splash screen is useful to avoid any visual
                  gap between the end of Android's launch screen and the painting of
                  Flutter's first frame. -->
+            <meta-data
+                android:name="io.flutter.embedding.android.SplashScreenDrawable"
+                android:resource="@drawable/launch_background"
+                />
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>