Updated default browser bottom sheet texts and low priorit message text to prevent widows and improve text handling. (#6611)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1200581511062568/task/1211065154998330?focus=true

### Description

This PR enhances the text formatting in the default browser prompts by
applying the `preventWidows()` extension function to titles and
headings. This prevents single words from appearing alone on the last
line of text, improving readability and visual appearance.

Key changes:
- Added dynamic text setting for default browser bottom sheet dialog
title and subtitle
- Applied `preventWidows()` to the new tab page default browser message
heading
- Updated layout files to use tools:text instead of android:text for
preview purposes

### Steps to test this PR
Code review. See screenshots.

### UI changes
| Bottomsheet  | Message |
| ------ | ----- |
|<img width="1080" height="2400" alt="Screenshot_20250819_184421"
src="https://github.com/user-attachments/assets/21887dac-6eec-486c-a74a-18412c43e2fa"
/>|<img width="1080" height="2400" alt="Screenshot_20250819_184245"
src="https://github.com/user-attachments/assets/fe44868e-f9c4-492e-9a61-56b1ee0f3d8d"
/>|

Author: anikiki

app/src/main/java/com/duckduckgo/app/browser/defaultbrowsing/prompts/ui/DefaultBrowserBottomSheetDialog.kt

@@ -21,7 +21,10 @@ import android.content.Context
 import android.content.DialogInterface
 import android.view.LayoutInflater
 import android.widget.FrameLayout
+import androidx.core.content.ContextCompat.getString
+import com.duckduckgo.app.browser.R as BrowserR
 import com.duckduckgo.app.browser.databinding.BottomSheetDefaultBrowserBinding
+import com.duckduckgo.common.utils.extensions.preventWidows
 import com.duckduckgo.mobile.android.R as CommonR
 import com.google.android.material.R
 import com.google.android.material.bottomsheet.BottomSheetBehavior
@@ -43,6 +46,11 @@ class DefaultBrowserBottomSheetDialog(private val context: Context) : BottomShee
         this.behavior.state = BottomSheetBehavior.STATE_EXPANDED
         this.behavior.isDraggable = false
 
+        binding.defaultBrowserBottomSheetDialogTitle.text =
+            getString(context, BrowserR.string.defaultBrowserBottomSheetDialogTitle).preventWidows()
+        binding.defaultBrowserBottomSheetDialogSubTitle.text =
+            getString(context, BrowserR.string.defaultBrowserBottomSheetDialogSubTitle).preventWidows()
+
         setOnShowListener { dialogInterface ->
             setRoundCorners(dialogInterface)
             eventListener?.onShown()

app/src/main/java/com/duckduckgo/app/browser/newtab/LowPriorityMessagingModelImpl.kt

@@ -25,6 +25,7 @@ import com.duckduckgo.app.browser.newtab.NewTabLegacyPageViewModel.Command.Launc
 import com.duckduckgo.app.pixels.AppPixelName
 import com.duckduckgo.app.statistics.pixels.Pixel
 import com.duckduckgo.common.ui.view.MessageCta.Message
+import com.duckduckgo.common.utils.extensions.preventWidows
 import com.duckduckgo.di.scopes.AppScope
 import com.squareup.anvil.annotations.ContributesBinding
 import javax.inject.Inject
@@ -62,7 +63,7 @@ class LowPriorityMessagingModelImpl @Inject constructor(
                 DefaultBrowserMessage(
                     Message(
                         topIllustration = com.duckduckgo.mobile.android.R.drawable.ic_device_mobile_default,
-                        title = context.getString(R.string.newTabPageDefaultBrowserMessageHeading),
+                        title = context.getString(R.string.newTabPageDefaultBrowserMessageHeading).preventWidows(),
                         action = context.getString(R.string.newTabPageDefaultBrowserMessagePrimaryCta),
                         action2 = context.getString(R.string.newTabPageDefaultBrowserMessageSecondaryCta),
                     ),

app/src/main/res/layout/bottom_sheet_default_browser.xml

@@ -49,22 +49,24 @@
             tools:ignore="ContentDescription" />
 
         <com.duckduckgo.common.ui.view.text.DaxTextView
+            android:id="@+id/defaultBrowserBottomSheetDialogTitle"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginTop="24dp"
             android:paddingHorizontal="24dp"
             android:gravity="center"
-            android:text="@string/defaultBrowserBottomSheetDialogTitle"
+            tools:text="@string/defaultBrowserBottomSheetDialogTitle"
             app:textType="primary"
             app:typography="h1" />
 
         <com.duckduckgo.common.ui.view.text.DaxTextView
+            android:id="@+id/defaultBrowserBottomSheetDialogSubTitle"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginTop="24dp"
             android:paddingHorizontal="24dp"
             android:gravity="center"
-            android:text="@string/defaultBrowserBottomSheetDialogSubTitle"
+            tools:text="@string/defaultBrowserBottomSheetDialogSubTitle"
             app:textType="primary"
             app:typography="body1" />