Deeplink to reviewer closes everything

Currently, the code ensured there was at most one IntentHandler. We
honestly don't care about it. The intended meaning was that there is a
single reviewer.

This bug was probably introduced in #17422 with commit
f26aa95.

I would love to test to avoid another regression. However, it's really
not clear to me how to deal with shortcuts, widget or remainders as
they are outside of the main app.

I discovered that having a single reviewer is still not
enough. Because what is below the reviewer could be nonsense. Instead,
I followed standard practice for deep link. I close everything and
create a fresh stack.

Bug #16956.
Fixes #17664.

Co-authored-by: Mike Hardy <github@mikehardy.net>

AnkiDroid/src/main/java/com/ichi2/anki/IntentHandler.kt

@@ -91,7 +91,7 @@ class IntentHandler : AbstractIntentHandler() {
                     finish()
                 }
             LaunchType.SYNC -> runIfStoragePermissions { handleSyncIntent(reloadIntent, action) }
-            LaunchType.REVIEW -> runIfStoragePermissions { handleReviewIntent(intent) }
+            LaunchType.REVIEW -> runIfStoragePermissions { handleReviewIntent(reloadIntent, intent) }
             LaunchType.DEFAULT_START_APP_IF_NEW -> {
                 Timber.d("onCreate() performing default action")
                 launchDeckPickerIfNoOtherTasks(reloadIntent)
@@ -144,17 +144,29 @@ class IntentHandler : AbstractIntentHandler() {
         }
     }
 
-    private fun handleReviewIntent(intent: Intent) {
+    private fun handleReviewIntent(
+        reloadIntent: Intent,
+        reviewerIntent: Intent,
+    ) {
         val deckId = intent.getLongExtra(ReminderService.EXTRA_DECK_ID, 0)
         Timber.i("Handling intent to review deck '%d'", deckId)
+
         val reviewIntent =
             if (sharedPrefs().getBoolean("newReviewer", false)) {
                 ReviewerFragment.getIntent(this)
             } else {
-                Intent(this, Reviewer::class.java)
+                Intent(this, Reviewer::class.java).apply {
+                    addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
+                }
             }
         CollectionManager.getColUnsafe().decks.select(deckId)
-        startActivity(reviewIntent)
+        // Clean the stack out under the reviewer to avoid any incorrect activities / dialogs /
+        // data state from prior app usage showing after reviewer exits if going to reviewer directly
+        TaskStackBuilder
+            .create(applicationContext)
+            .addNextIntent(reloadIntent)
+            .addNextIntent(reviewIntent)
+            .startActivities()
         finish()
     }
 
@@ -439,7 +451,6 @@ class IntentHandler : AbstractIntentHandler() {
         ) = Intent(context, IntentHandler::class.java).apply {
             setAction(Intent.ACTION_VIEW)
             putExtra(ReminderService.EXTRA_DECK_ID, deckId)
-            addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
         }
     }
 }