Bug 1845747 - Allow enabling/disabling of onboarding cards

As there might be situations where experiments require disabling
certain juno onboarding cards and enabling others, a new flag has
been added to the `OnboardingCardData` which gives more freedom and
options to the experimenter. This flag is by default set to true.

(cherry picked from commit 30a4e7d1d9b879f7862217276cb2ce7c4af04c05)

app/onboarding.fml.yaml

@@ -25,6 +25,7 @@ features:
 
             add-search-widget:
               card-type: add-search-widget
+              enabled: false
               title: juno_onboarding_add_search_widget_title
               body: juno_onboarding_add_search_widget_description
               image-res: ic_onboarding_search_widget
@@ -68,6 +69,10 @@ objects:
         description: The type of the card.
         # This should never be defaulted.
         default: default-browser
+      enabled:
+        type: Boolean
+        description: If true, this card is shown to the user.
+        default: true
       title:
         type: Text
         description: The title text displayed to the user.

app/src/main/java/org/mozilla/fenix/onboarding/view/JunoOnboardingMapper.kt

@@ -14,18 +14,18 @@ import org.mozilla.fenix.settings.SupportUtils
  */
 internal fun Collection<OnboardingCardData>.toPageUiData(
     showNotificationPage: Boolean,
-    canShowAddWidgetPage: Boolean,
+    showAddWidgetPage: Boolean,
 ): List<OnboardingPageUiData> =
     filter {
         when (it.cardType) {
             OnboardingCardType.NOTIFICATION_PERMISSION -> {
-                showNotificationPage
+                it.enabled && showNotificationPage
             }
             OnboardingCardType.ADD_SEARCH_WIDGET -> {
-                canShowAddWidgetPage
+                it.enabled && showAddWidgetPage
             }
             else -> {
-                true
+                it.enabled
             }
         }
     }.sortedBy { it.ordering }

app/src/main/res/values/strings.xml

@@ -330,13 +330,13 @@
     <string name="juno_onboarding_enable_notifications_positive_button" tools:ignore="UnusedResources">Turn on notifications</string>
     <!-- Text for the button dismiss the screen and move on with the flow -->
     <string name="juno_onboarding_enable_notifications_negative_button" tools:ignore="UnusedResources">Not now</string>
-    <!-- Title for add search widget screen.
+    <!-- Title for add search widget screen used by Nimbus experiments. Nimbus experiments do not support string placeholders.
         Note: The word "Firefox" should NOT be translated -->
     <string name="juno_onboarding_add_search_widget_title" tools:ignore="UnusedResources">Try the Firefox search widget</string>
-    <!-- Description for add search widget screen.
+    <!-- Description for add search widget screen used by Nimbus experiments. Nimbus experiments do not support string placeholders.
         Note: The word "Firefox" should NOT be translated -->
     <string name="juno_onboarding_add_search_widget_description" tools:ignore="UnusedResources">With Firefox on your home screen, you’ll have easy access to the privacy-first browser that blocks cross-site trackers.</string>
-    <!-- Text for the button to add search widget on the device
+    <!-- Text for the button to add search widget on the device used by Nimbus experiments. Nimbus experiments do not support string placeholders.
         Note: The word "Firefox" should NOT be translated -->
     <string name="juno_onboarding_add_search_widget_positive_button" tools:ignore="UnusedResources">Add Firefox widget</string>
     <!-- Text for the button to dismiss the screen and move on with the flow -->