fix: tooltip: Tooltip delay should be reset on close

[margaree]

Jira ticket

Requested by Jeff. He noticed that the current tooltip behaviour is that if a user is hovering over a tooltip target for > 1000ms and then goes to an adjacent target then there is a delay opening the next tooltip. We want the user to be able to quickly see the next tooltip contents if looking at a tooltip already, no matter how long they've been hovering over the current.

Desired behaviour:

• No delay when user hovers over adjacent tooltip openers as long as they reach the adjacent opener within 1000ms (this is different than previous where if the user hovered for > 1000 ms there would be a delay on adjacent opener)
• Delay on initial open (same as previous)
• Delay on subsequent opens if 1000ms has passed and no other tooltip is open (same as previous)

[github-actions]

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[d2l-github-release-tokens]

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