refactor(events): Centralize editable fields for event objects

- Implemented a whitelist for editable fields for the 'event' object type to prevent sending read-only fields in POST/PATCH requests.
- Created a new file  to define the editable fields.
- Modified  and  to use this whitelist.
- Removed the temporary cleaning logic from the event settings page.
- Corrected Svelte 5  to  in event settings components.
- Updated Dexie interfaces for badge, badge_template, and device to use string IDs.

src/lib/ae_events/db_events.ts

@@ -99,7 +99,7 @@ export interface Event {
 
 // Updated 2025-10-06
 export interface Badge {
-    id: number;
+    id: string;
     // id_random: string;
     event_badge_id: string;
     event_badge_id_random: string;
@@ -190,7 +190,7 @@ export interface Badge {
 
 // Updated 2025-10-06
 export interface Badge_template {
-    id: number;
+    id: string;
     // id_random: string;
 
     event_id: string;
@@ -249,7 +249,7 @@ export interface Badge_template {
 
 // Updated 2024-10-16
 export interface Device {
-    id: number;
+    id: string;
     // id_random: string;
     event_device_id: string;
     // event_device_id_random: string;