switch to invokes instead of emits

src/views/Approve.svelte

@@ -7,11 +7,15 @@
     const dispatch = createEventDispatcher();
 
     async function approve() {
-        if (appState.credentialStatus === 'unlocked') {
+        let status = await invoke('get-session-status');
+        if (status === 'unlocked') {
             dispatch('navigate', {target: 'ShowApproved'});
         }
+        else if (status === 'locked') {
+            dispatch('navigate', {target: 'Unlock'})
+        }
         else {
-            dispatch('navigate', {target: 'Unlock'});
+            dispatch('navigate', {target: 'EnterCredentials'});
         }
     }