Resize vuln graph

What does this MR do?

The vuln graph would be the wrong width when the user would resize the browser window, or when the nav bar would collapse automatically:

Based on the solution in: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24649/diffs

This MR creates a reusable resizable_chart_container component.

Before:

After: reafactored-chart-responsiveness

What are the relevant issue numbers?

https://gitlab.com/gitlab-org/gitlab-ee/issues/9615

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.
• EE specific content should be in the top level /ee folder
• For a paid feature, have we considered GitLab.com plans, how it works for groups, and is there a design for promoting it to users who aren't on the correct plan?
• Security reports checked/validated by reviewer