DataList: Actions spacing is off on non plain buttons

[tlabaj]

Please describe the issue
Actions spacing is off on non plain buttons.

All actions should have the internal wrapper applied by the isPlainButtonAction
Prop. we can then remove the prop.

Are there visuals for this issue? Please provide screenshots
Include screenshots or links to Marvel or other mockups.
https://staging-v6.patternfly.org/components/data-list#actions-single-and-multiple

Could you point to a branch or draft PR where this issue exists? Please provide a link to the code

Any other information?