[Dev Tools] Tiny offset creates a scrollbar on IE11

[jloleysens]

Kibana version:
Since 2ad2bfa was merged into master (v7.8.0)

Describe the bug:

After merging #66010 which fixed a Console, Searchprofiler and Painless Lab layout issue on IE11; we still have an issue where the user has a ~1px scroll which causes a scrollbar to appear on aforementioned apps.

This also happens on FF in Painless Lab.

Steps to reproduce:

1. Start Kibana with: BROWSERSLIST_ENV=production yarn start --host 0.0.0.0
2. Edit src/core/server/rendering/views/template.tsx . Specifically change window.__kbnCspNotEnforced__ = true; to window.__kbnCspNotEnforced__ = false; (hacky, not sure how this works otherwise)
3. Go to Console, Searchprofiler or Painless Lab on IE11 (do the same on FF)

Expected behavior:

There should be no scrolling on these apps.

Screenshots (if relevant):

Any additional context:

This appears to have happened after #64018 was merged.

[elasticmachine]

Pinging @elastic/es-ui (Team:Elasticsearch UI)

[cjcenizal]

Closing this because we no longer support IE11. 🍾