Add max width to the screen instructions view text

- This ensures that the instruction wraps if the text is too long

Fixes: 328577545
Fixes: 345128488
Flag: EXEMPT bugfix
Test: Visual inspection of instructions view in different languages/form
      factors
Change-Id: I73e889372a5c482277b0e4b61fb834304304c0a6

quickstep/res/layout/split_instructions_view.xml

@@ -29,6 +29,7 @@
         android:id="@+id/split_instructions_text"
         android:layout_height="wrap_content"
         android:layout_width="wrap_content"
+        android:maxWidth="@dimen/split_instructions_view_max_width"
         android:textColor="?androidprv:attr/textColorOnAccent"
         android:text="@string/toast_split_select_app" />
 
@@ -36,6 +37,7 @@
         android:id="@+id/split_instructions_text_cancel"
         android:layout_height="wrap_content"
         android:layout_width="wrap_content"
+        android:layout_gravity="center_vertical"
         android:textColor="?androidprv:attr/textColorOnAccent"
         android:layout_marginStart="@dimen/split_instructions_start_margin_cancel"
         android:text="@string/toast_split_select_app_cancel"

quickstep/res/values-sw600dp/dimens.xml

@@ -45,4 +45,8 @@
     <dimen name="allset_page_allset_text_size">38sp</dimen>
     <dimen name="allset_page_swipe_up_text_size">15sp</dimen>
 
+    <!-- Splitscreen -->
+    <!-- Max width of the split instructions view -->
+    <dimen name="split_instructions_view_max_width">300dp</dimen>
+
 </resources>

quickstep/res/values/dimens.xml

@@ -490,4 +490,8 @@
     <!-- Digital Wellbeing -->
     <dimen name="digital_wellbeing_toast_height">48dp</dimen>
 
+    <!-- Splitscreen -->
+    <!-- Max width of the split instructions view -->
+    <dimen name="split_instructions_view_max_width">220dp</dimen>
+
 </resources>