PIM-1154: Changed grid no results message on search

Display a new message when there are no results found on grid.

| Q                    | A
| -------------------- | ---
| Bug fix?             | No
| New feature?         | Yes
| BC breaks?           | No
| CI currently passes? | Yes
| Tests pass?          | Yes
| Scenarios pass?      | Yes
| Checkstyle issues?*  | No
| PMD issues?**        | No
| Changelog updated?   | No
| Fixed tickets        | PIM-1154
| DB schema updated?   | No
| Migration script?    | No
| Doc PR               | No
@solivier no issue with the fact you don't use the entityHint which is passed from the template ?