Resolve "Services: Save anyway text hard to read and click"

What does this MR do?

• Adjust flash action styling to be bold white text with an underline on hover
• Remove the awkward space between the text and the action in a flash

Screenshots

Before	With this MR

What are the relevant issue numbers?

#56450 (moved)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer

Closes #56450 (moved)