Use colored text instead

(cherry picked from commit 6ef41e03e3)

(cherry picked from commit 40f27f908a)

Mandatory fields are highlighted red on page load. It should only highlight if we save the document.

**Before:** Form

https://user-images.githubusercontent.com/30859809/168791201-049c1de2-b7f5-4dff-bf40-093ff96d4510.mov

**After:** Form

https://user-images.githubusercontent.com/30859809/168791164-45e2289b-2d2c-4ebb-8b4d-cd2932140572.mov

**Before:** Dialog

https://user-images.githubusercontent.com/30859809/168791207-800ba9e5-b4eb-419f-8a99-f94916c21c79.mov

**After:** Dialog

https://user-images.githubusercontent.com/30859809/168791210-f2761d23-3a60-40c2-8aff-2d2cebbd77fa.mov

Resolves https://github.com/frappe/frappe/issues/16866

Disable form tour tests