utils: drop pointerEventsNone

Not sure why this was used in the first place, but causes non-default
behavior which can be confusing.

src/toolbar/ActionButton.tsx

@@ -12,7 +12,6 @@ import {
 import { Tooltip2 } from '@blueprintjs/popover2';
 import React, { useEffect, useMemo, useState } from 'react';
 import { tooltipDelay } from '../app/constants';
-import { pointerEventsNone } from '../utils/react';
 
 const smallScreenThreshold = 700;
 
@@ -101,7 +100,6 @@ const ActionButton: React.VoidFunctionComponent<ActionButtonProps> = ({
                     intent={Intent.PRIMARY}
                     onClick={onAction}
                     disabled={enabled === false}
-                    style={enabled === false ? pointerEventsNone : undefined}
                 >
                     {showProgress ? (
                         <Spinner
@@ -115,7 +113,6 @@ const ActionButton: React.VoidFunctionComponent<ActionButtonProps> = ({
                             height={`${buttonSize}px`}
                             src={icon}
                             alt={label}
-                            style={pointerEventsNone}
                         />
                     )}
                 </Button>

src/toolbar/OpenFileButton.tsx

@@ -6,7 +6,6 @@ import { Tooltip2 } from '@blueprintjs/popover2';
 import React, { useEffect, useState } from 'react';
 import { useDropzone } from 'react-dropzone';
 import { tooltipDelay } from '../app/constants';
-import { pointerEventsNone } from '../utils/react';
 
 const smallScreenThreshold = 700;
 export interface OpenFileButtonProps {
@@ -115,7 +114,6 @@ const OpenFileButton: React.VoidFunctionComponent<OpenFileButtonProps> = ({
                         'aria-haspopup': undefined,
                         intent: Intent.PRIMARY,
                         disabled: enabled === false,
-                        style: enabled === false ? pointerEventsNone : undefined,
                         onClick: onClick,
                     })}
                 >
@@ -132,7 +130,6 @@ const OpenFileButton: React.VoidFunctionComponent<OpenFileButtonProps> = ({
                             height={`${buttonSize}px`}
                             src={icon}
                             alt={label}
-                            style={pointerEventsNone}
                         />
                     )}
                 </Button>

src/utils/react.ts

@@ -1,11 +1,8 @@
 // helper functions for React components
 
-import React, { useState } from 'react';
+import { useState } from 'react';
 import { createCountFunc } from './iter';
 
-/** Style to disable pointer events. */
-export const pointerEventsNone: React.CSSProperties = { pointerEvents: 'none' };
-
 const nextId = createCountFunc();
 
 /**