Fix missing icons and subtitle in mobile boost/quote menu (#36038)

app/javascript/mastodon/utils/types.ts

@@ -0,0 +1,16 @@
+/**
+ * Extend an existing type and make some of its properties required or optional.
+ * @example
+ * interface Person {
+ * 	name: string;
+ * 	age?: number;
+ * 	likesIceCream?: boolean;
+ * }
+ *
+ * type PersonWithSomeRequired = SomeRequired<Person, 'age' | 'likesIceCream' >;
+ * type PersonWithSomeOptional = SomeOptional<Person, 'name' >;
+ */
+
+export type SomeRequired<T, K extends keyof T> = T & Required<Pick<T, K>>;
+export type SomeOptional<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>> &
+  Partial<Pick<T, K>>;