Rename JSX files with proper .jsx extension (#23733)

app/javascript/mastodon/features/compose/components/autosuggest_account.jsx

@@ -0,0 +1,24 @@
+import React from 'react';
+import Avatar from '../../../components/avatar';
+import DisplayName from '../../../components/display_name';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+export default class AutosuggestAccount extends ImmutablePureComponent {
+
+  static propTypes = {
+    account: ImmutablePropTypes.map.isRequired,
+  };
+
+  render () {
+    const { account } = this.props;
+
+    return (
+      <div className='autosuggest-account' title={account.get('acct')}>
+        <div className='autosuggest-account-icon'><Avatar account={account} size={18} /></div>
+        <DisplayName account={account} />
+      </div>
+    );
+  }
+
+}