Resolve analytics dashboard error popover is difficult to use

What does this MR do and why?

This MR increases the hide delay of the GlPopover giving users more time to move their cursor to the documentation link before the popover hides itself to resolve Analytics dashboard error popover is difficult ... (#420739 - closed).

Screenshots or screen recordings

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Before	After

How to set up and validate locally

1. Follow these instructions to setup Product Analytics in GDK.
2. Onboard a project at Project -> Analyze -> Analytics dashboards
3. View a dashboard, and verify the panel empty state is in the updated style
4. Now cause some panels to fail to load

• An easy way to do this is to temporarily modify a built in visualization, e.g. ee/lib/gitlab/analytics/product_analytics/visualizations/sessions_over_time.yaml and change the measure to some invalid value, so the query will fail.

1. Verify the new error state is shown, and the panel has a popover including a link to the troubleshooting docs

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #420739 (closed)