docs: Ignore ExpansionPanel#square like on master

docs/pages/api-docs/expansion-panel.md

@@ -30,7 +30,6 @@ You can learn more about the difference by [reading this guide](/guides/minimizi
 | <span class="prop-name">disabled</span> | <span class="prop-type">bool</span> | <span class="prop-default">false</span> | If `true`, the panel will be displayed in a disabled state. |
 | <span class="prop-name">expanded</span> | <span class="prop-type">bool</span> |  | If `true`, expands the panel, otherwise collapse it. Setting this prop enables control over the panel. |
 | <span class="prop-name">onChange</span> | <span class="prop-type">func</span> |  | Callback fired when the expand/collapse state is changed.<br><br>**Signature:**<br>`function(event: object, expanded: boolean) => void`<br>*event:* The event source of the callback.<br>*expanded:* The `expanded` state of the panel. |
-| <span class="prop-name">square</span> | <span class="prop-type">bool</span> | <span class="prop-default">false</span> | If `true`, rounded corners are disabled. |
 | <span class="prop-name">TransitionComponent</span> | <span class="prop-type">elementType</span> | <span class="prop-default">Collapse</span> | The component used for the collapse effect. [Follow this guide](/components/transitions/#transitioncomponent-prop) to learn more about the requirements for this component. |
 | <span class="prop-name">TransitionProps</span> | <span class="prop-type">object</span> |  | Props applied to the [`Transition`](http://reactcommunity.org/react-transition-group/transition#Transition-props) element. |
 

packages/material-ui/src/ExpansionPanel/ExpansionPanel.js

@@ -201,7 +201,7 @@ ExpansionPanel.propTypes = {
    */
   onChange: PropTypes.func,
   /**
-   * If `true`, rounded corners are disabled.
+   * @ignore
    */
   square: PropTypes.bool,
   /**

scripts/generateProptypes.ts

@@ -64,6 +64,7 @@ const useExternalDocumentation: Record<string, string[]> = {
  */
 const ignoreExternalDocumentation: Record<string, string[]> = {
   Collapse: ['onEnter', 'onEntered', 'onEntering', 'onExit', 'onExiting'],
+  ExpansionPanel: ['square'],
   Fade: ['onEnter', 'onExit'],
   Grow: ['onEnter', 'onExit'],
   InputBase: ['aria-describedby'],