[Glitch] Fix full date display not respecting the locale 12/24h format

Port 4185f3792c to glitch-soc

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

app/javascript/flavours/glitch/components/edited_timestamp/index.jsx

@@ -68,7 +68,7 @@ class EditedTimestamp extends PureComponent {
     return (
       <DropdownMenu statusId={statusId} renderItem={this.renderItem} scrollable renderHeader={this.renderHeader} onItemClick={this.handleItemClick}>
         <button className='dropdown-menu__text-button'>
-          <FormattedMessage id='status.edited' defaultMessage='Edited {date}' values={{ date: intl.formatDate(timestamp, { hour12: false, month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) }} /> <Icon id='caret-down' icon={ArrowDropDownIcon} />
+          <FormattedMessage id='status.edited' defaultMessage='Edited {date}' values={{ date: intl.formatDate(timestamp, { month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) }} /> <Icon id='caret-down' icon={ArrowDropDownIcon} />
         </button>
       </DropdownMenu>
     );

app/javascript/flavours/glitch/components/relative_timestamp.tsx

@@ -53,7 +53,6 @@ const messages = defineMessages({
 });
 
 const dateFormatOptions = {
-  hour12: false,
   year: 'numeric',
   month: 'short',
   day: '2-digit',

app/javascript/flavours/glitch/components/status_action_bar.jsx

@@ -351,7 +351,7 @@ class StatusActionBar extends ImmutablePureComponent {
 
         <div className='status__action-bar-spacer' />
         <a href={status.get('url')} className='status__relative-time' target='_blank' rel='noopener'>
-          <RelativeTimestamp timestamp={status.get('created_at')} />{status.get('edited_at') && <abbr title={intl.formatMessage(messages.edited, { date: intl.formatDate(status.get('edited_at'), { hour12: false, year: 'numeric', month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) })}> *</abbr>}
+          <RelativeTimestamp timestamp={status.get('created_at')} />{status.get('edited_at') && <abbr title={intl.formatMessage(messages.edited, { date: intl.formatDate(status.get('edited_at'), { year: 'numeric', month: 'short', day: '2-digit', hour: '2-digit', minute: '2-digit' }) })}> *</abbr>}
         </a>
       </div>
     );