Fix security dashboard for Safari (< 14.0)

What does this MR do?

It fixes an issue with the security dashboard on Safari < 14.0:

Screen recordings (Safari 13.1)

before	after
Screen_Recording_2021-02-12_at_2.43.09_pm	Screen_Recording_2021-02-12_at_2.39.35_pm

Screenshots (Chrome latest - no changes expected)

state	before	after
collapsed
expanded

How to test this?

• Use Safari (< 14.0) and go to your local gdk: http://localhost:3000/-/security/dashboard
• (optional) if you don't have any projects then go to Settings and add some, then go back to Security Dashboard
• Expand / Collape any of the sections with more than 3 projects in it

Note: For a full description read the issue #267986 (closed)

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content

Availability and Testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Related to #267986 (closed)