PIM-2769 Improve grid UI performance with many filters

This makes sure that widgets for hidden filters are not rendered. It solves the UI lag but doesn't solve the really long request to load the grid metadata. 

| Q                    | A
| -------------------- | ---
| Bug fix?             | Y
| New feature?         | N
| BC breaks?           | N
| CI currently passes? | N
| Tests pass?          | Y
| Scenarios pass?      | Y
| Checkstyle issues?*  | N
| PMD issues?**        | N
| Changelog updated?  | N
| Fixed tickets        | PIM-2769?
| Doc PR               | ~