fix(tocco-ui): fix jumping layout on firefox
fix(tocco-ui): fix jumping layout on firefox

- on ffox the layout was jumping randomly while mouse movements
- hovering on relations-tab was triggering the jumping
- removing unused grid styles fixes strange jumping

Refs: TOCDEV-5006
Changelog: fix jumping layout on firefox
Cherry-pick: Up

tocco/tocco-client,tocco/tocco-client,tocco/tocco-client