FIX Button layout that display icons

[satrun77]

Description

The workflow interface looks like the following

Similar issue in silverstripe/silverstripe-admin#1581

Manual testing steps

• Install workflow
• Create a new one
• See the extra icons

Issues

• Too many unwanted icons visible in workflow manage interface #515

Pull request checklist

• The target branch is correct
  • See picking the right version
• All commits are relevant to the purpose of the PR (e.g. no debug statements, unrelated refactoring, or arbitrary linting)
  • Small amounts of additional linting are usually okay, but if it makes it hard to concentrate on the relevant changes, ask for the unrelated changes to be reverted, and submitted as a separate PR.
• The commit messages follow our commit message guidelines
• The PR follows our contribution guidelines
• Code changes follow our coding conventions
• This change is covered with tests (or tests aren't necessary for this change)
• Any relevant User Help/Developer documentation is updated; for impactful changes, information is added to the changelog for the intended release
• CI is green

[GuySartorelli]

PR works as expected.

Since this is a bug fix, you can target the 6.1 branch if you like (you may need to reset your commits afterward), and then this can be released immediately as a patch.
Otherwise if it's merged on the 6 branch it won't be available until the next minor release in April.

Up to you either way - I'm happy to merge as-is if you don't want to retarget the PR.

[satrun77]

@GuySartorelli Done thanks

[GuySartorelli]

LGTM