[Glitch] Change RTL detection to rely on unicode-bidi paragraph by paragraph

Port 1f564051b6 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/autosuggest_textarea.js

@@ -4,7 +4,6 @@ import AutosuggestEmoji from './autosuggest_emoji';
 import AutosuggestHashtag from './autosuggest_hashtag';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
-import { isRtl } from 'flavours/glitch/util/rtl';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import Textarea from 'react-textarea-autosize';
 import classNames from 'classnames';
@@ -195,11 +194,6 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
   render () {
     const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, children } = this.props;
     const { suggestionsHidden } = this.state;
-    const style = { direction: 'ltr' };
-
-    if (isRtl(value)) {
-      style.direction = 'rtl';
-    }
 
     return [
       <div className='compose-form__autosuggest-wrapper' key='autosuggest-wrapper'>
@@ -220,7 +214,7 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
               onFocus={this.onFocus}
               onBlur={this.onBlur}
               onPaste={this.onPaste}
-              style={style}
+              dir='auto'
               aria-autocomplete='list'
             />
           </label>