Correctly handle account with invalid access token

Show a popup saying the session was signed out and cleanup
the models data, instead of spamming the users with
never-ending errors.

src/gui/PythonBridge/EventHandlers.qml

@@ -94,4 +94,8 @@ QtObject {
     function onDevicesUpdated(forAccount) {
         deviceUpdateSignal(forAccount)
     }
+
+    function onInvalidAccessToken(userId) {
+        window.makePopup("Popups/InvalidAccessTokenPopup.qml", {userId})
+    }
 }

src/gui/PythonBridge/Globals.qml

@@ -5,5 +5,7 @@ import QtQuick 2.12
 
 QtObject {
     readonly property var pendingCoroutines: ({})
-    readonly property var hideErrorTypes: new Set(["gaierror", "SSLError"])
+    readonly property var hideErrorTypes: new Set([
+        "gaierror", "SSLError", "MatrixInvalidAccessToken",
+    ])
 }