For #10285: Swap TextView for a LinkTextView to improve links a11y

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

@@ -27,7 +27,7 @@
             android:visibility="visible"
             app:layout_constraintTop_toTopOf="parent" />
 
-        <TextView
+        <org.mozilla.fenix.utils.LinkTextView
             android:id="@+id/exceptions_learn_more"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

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

@@ -37,7 +37,7 @@
             app:layout_constraintTop_toTopOf="parent"
             app:layout_constraintStart_toStartOf="parent"/>
 
-        <TextView
+        <org.mozilla.fenix.utils.LinkTextView
             android:id="@+id/saved_passwords_empty_learn_more"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"

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

@@ -58,7 +58,7 @@
         android:labelFor="@+id/edit_search_string"
         android:textColor="@android:color/tertiary_text_dark" />
 
-    <TextView
+    <org.mozilla.fenix.utils.LinkTextView
         android:id="@+id/custom_search_engines_learn_more"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
@@ -66,7 +66,6 @@
         android:minHeight="@dimen/accessibility_min_height"
         android:textColor="?accent"
         android:visibility="visible"
-        android:contentDescription="@string/search_add_custom_engine_learn_more_description"
         app:layout_constraintTop_toBottomOf="@id/exceptions_empty_message" />
 
     <ProgressBar

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

@@ -40,7 +40,7 @@
         app:layout_constraintTop_toBottomOf="@id/header_text"
         tools:text="@string/onboarding_whats_new_description" />
 
-    <TextView
+    <org.mozilla.fenix.utils.LinkTextView
         android:id="@+id/get_answers"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"

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

@@ -46,7 +46,7 @@
         tools:text="@string/search_suggestions_onboarding_text"
         tools:textAppearance="?attr/textAppearanceListItemSmall"/>
 
-    <TextView
+    <org.mozilla.fenix.utils.LinkTextView
         android:id="@+id/learn_more"
         android:layout_width="0dp"
         android:layout_height="wrap_content"