Add word-break to issue title to fix edit button disspearing

What does this MR do?

This MR adds a break-word to the title of the issues to avoid a problem where the edit button disspeared in small screens.

I've had to add word-wrap and overflow-wrap to be able to support all of Gitlab supported browsers, more info here

Also, I've had to add a min-width: 0 because of problems with the title being a flex item, more info here

I've tested it in Chrome, Firefox, Edge, Safari and Opera.

Before:

After:

What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ce/issues/55484

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• 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 #55484 (closed)