Refactor portals/outside clicks in sticker creator

ts/components/PopperRootContext.tsx

@@ -1,43 +0,0 @@
-// Copyright 2020 Signal Messenger, LLC
-// SPDX-License-Identifier: AGPL-3.0-only
-
-import * as React from 'react';
-
-const makeApi = (classes?: Array<string>) => ({
-  createRoot: () => {
-    const div = document.createElement('div');
-
-    if (classes) {
-      classes.forEach(theme => {
-        div.classList.add(theme);
-      });
-    }
-
-    document.body.appendChild(div);
-
-    return div;
-  },
-  removeRoot: (root: HTMLElement) => {
-    document.body.removeChild(root);
-  },
-});
-
-export const PopperRootContext = React.createContext(makeApi());
-
-export type ClassyProviderProps = {
-  classes?: Array<string>;
-  children?: React.ReactChildren;
-};
-
-export function ClassyProvider({
-  classes,
-  children,
-}: ClassyProviderProps): JSX.Element {
-  const api = React.useMemo(() => makeApi(classes), [classes]);
-
-  return (
-    <PopperRootContext.Provider value={api}>
-      {children}
-    </PopperRootContext.Provider>
-  );
-}