Do not open the room again when the app is resumed from the recents list (#7436)

MainActivity is a singleTask activity that declares the elementx://open deep
link, so tapping a notification makes that deep link the base intent of the
task. When the user later brings the app back from the recents list, the
system replays that base intent with FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY, the
resolver turns it into a navigation again and the user is pushed back into the
room they had already left.

Ignore any intent the system replayed from the history, the same way the
launcher intent is already ignored.

appnav/src/main/kotlin/io/element/android/appnav/intent/IntentResolver.kt

@@ -76,6 +76,7 @@ class IntentResolver(
 }
 
 private fun Intent.canBeIgnored(): Boolean {
+    if (flags and Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY != 0) return true
     return action == Intent.ACTION_MAIN &&
         categories?.contains(Intent.CATEGORY_LAUNCHER) == true
 }

appnav/src/test/kotlin/io/element/android/appnav/intent/IntentResolverTest.kt

@@ -45,6 +45,24 @@ class IntentResolverTest : RobolectricTest() {
         assertThat(result).isNull()
     }
 
+    @Test
+    fun `resolve intent replayed from the history should return null`() {
+        val sut = createIntentResolver(
+            deeplinkParserResult = DeeplinkData.Room(
+                sessionId = A_SESSION_ID,
+                roomId = A_ROOM_ID,
+                threadId = null,
+                eventId = null,
+            )
+        )
+        val intent = Intent(RuntimeEnvironment.getApplication(), Activity::class.java).apply {
+            action = Intent.ACTION_VIEW
+            addFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY)
+        }
+        val result = sut.resolve(intent)
+        assertThat(result).isNull()
+    }
+
     @Test
     fun `test resolve navigation intent root`() {
         val sut = createIntentResolver(