Resolve "Pipeline graph in new merge request widget is flickering"

What does this MR do?

Removes the pointer events for the SVG icon so that it doesn't trigger the tooltip.

Are there points in the code the reviewer needs to double check?

Check if there is a better fix than this. We disable pointer events for .tooltip which impacts all tooltips generated by HAML, so we may end up with some weird cases like this in our v-tooltip's.

Why was this MR needed?

Fix flickering bug

Screenshots (if relevant)

Before	After

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests added for this feature/bug
• Conform to the code review guidelines
  • Has been reviewed by a UX Designer
  • Has been reviewed by a Frontend maintainer
  • Has been reviewed by a Backend maintainer
  • Has been reviewed by a Database specialist
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conform to the database guides
• If you have multiple commits, please combine them into a few logically organized commits by squashing them
• Internationalization required/considered
• End-to-end tests pass (package-and-qa manual pipeline job)

What are the relevant issue numbers?

Closes #49165 (closed)