Fix error dialog

src/client/components/post-form.vue

@@ -564,7 +564,7 @@ export default defineComponent({
 				this.posting = false;
 				os.dialog({
 					type: 'error',
-					text: err.message + '<br>' + (err as any).id,
+					text: err.message + '\n' + (err as any).id,
 				});
 			});
 		},

src/client/os.ts

@@ -75,7 +75,7 @@ export function apiWithDialog(
 	promiseDialog(promise, onSuccess, onFailure ? onFailure : (e) => {
 		dialog({
 			type: 'error',
-			text: e.message + '<br>' + (e as any).id,
+			text: e.message + '\n' + (e as any).id,
 		});
 	});