Remove disconnected calls manually

A single disconnected but not removed call can cause false in-call state with in the app causing CallActivity to finish instantly even when there are no real active calls.

app/src/main/kotlin/com/simplemobiletools/dialer/helpers/CallManager.kt

@@ -109,6 +109,9 @@ class CallManager {
                     listener.onStateChanged()
                 }
             }
+
+            // remove all disconnected calls manually in case they are still here
+            calls.removeAll { it.getStateCompat() == Call.STATE_DISCONNECTED }
         }
 
         fun getPrimaryCall(): Call? {