Updated compose_form to account for if compose modal open

fixes #9
since there are multiple compose_form on the page (on top of timeline = shouldCondense) and within the modal when replying. if isModalOpen and is the compose form that's on top of timeline then dont set the ref so we can set the cursor on the textarea of the compose modal after the existing reply content.

app/javascript/gabsocial/features/compose/containers/compose_form_container.js

@@ -25,6 +25,7 @@ const mapStateToProps = state => ({
   isUploading: state.getIn(['compose', 'is_uploading']),
   showSearch: state.getIn(['search', 'submitted']) && !state.getIn(['search', 'hidden']),
   anyMedia: state.getIn(['compose', 'media_attachments']).size > 0,
+  isModalOpen: state.get('modal').modalType === 'COMPOSE',
 });
 
 const mapDispatchToProps = (dispatch) => ({