fix: don't show quoted toast on cancel of quote note

packages/frontend/src/os.ts

@@ -691,7 +691,7 @@ export function contextMenu(items: MenuItem[], ev: MouseEvent): Promise<void> {
 	}));
 }
 
-export function post(props: Record<string, any> = {}): Promise<void> {
+export function post(props: Record<string, any> = {}): Promise<void | boolean> {
 	pleaseLogin(undefined, (props.initialText || props.initialNote ? {
 		type: 'share',
 		params: {
@@ -709,8 +709,8 @@ export function post(props: Record<string, any> = {}): Promise<void> {
 		//       複数のpost formを開いたときに場合によってはエラーになる
 		//       もちろん複数のpost formを開けること自体Misskeyサイドのバグなのだが
 		const { dispose } = popup(MkPostFormDialog, props, {
-			closed: () => {
-				resolve();
+			closed: (cancelled) => {
+				resolve(cancelled);
 				dispose();
 			},
 		});