Update FalukantService and PoliticsView to enhance election data handling

- Modified the FalukantService to use getOpenPolitics instead of getElections for retrieving accessible elections, improving alignment with frontend data display.
- Updated the PoliticsView to handle the response from the application submission more effectively, ensuring that already applied positions remain pre-selected after submission.
- These changes aim to streamline the election data flow and enhance user experience in the application process.

frontend/src/views/falukant/PoliticsView.vue

@@ -324,11 +324,18 @@ export default {
 
         async submitApplications() {
             try {
-                await apiClient.post(
+                const response = await apiClient.post(
                     '/api/falukant/politics/open',
                     { electionIds: this.selectedApplications }
                 );
+                // Speichere die IDs der erfolgreich beworbenen Positionen
+                const appliedIds = response.data?.applied || [];
+                // Lade die Daten neu
                 await this.loadOpenPolitics();
+                // Stelle sicher, dass alle bereits beworbenen Positionen (inkl. der gerade beworbenen) vorselektiert bleiben
+                this.selectedApplications = this.openPolitics
+                    .filter(e => e.alreadyApplied || appliedIds.includes(e.id))
+                    .map(e => e.id);
             } catch (err) {
                 console.error('Error submitting applications', err);
             }