Change links in right panel to open in the same tab (#10848)

For Rambox compatibility

app/javascript/mastodon/features/ui/components/navigation_panel.js

@@ -21,8 +21,8 @@ const NavigationPanel = () => (
 
     <hr />
 
-    <a className='column-link column-link--transparent' href='/settings/preferences' target='_blank'><Icon className='column-link__icon' id='cog' fixedWidth /><FormattedMessage id='navigation_bar.preferences' defaultMessage='Preferences' /></a>
+    <a className='column-link column-link--transparent' href='/settings/preferences'><Icon className='column-link__icon' id='cog' fixedWidth /><FormattedMessage id='navigation_bar.preferences' defaultMessage='Preferences' /></a>
-    <a className='column-link column-link--transparent' href='/relationships' target='_blank'><Icon className='column-link__icon' id='address-book-o' fixedWidth /><FormattedMessage id='navigation_bar.follows_and_followers' defaultMessage='Follows and followers' /></a>
+    <a className='column-link column-link--transparent' href='/relationships'><Icon className='column-link__icon' id='address-book-o' fixedWidth /><FormattedMessage id='navigation_bar.follows_and_followers' defaultMessage='Follows and followers' /></a>
   </div>
 );