fix: invalid HTML and react errors in insights pages

[thomasheartman]

This PR fixes these errors (that were showing up in the dev console) in the insights pages:

• nesting a div within a p in the count header (flags, environments, apps); instead flip the relationship and nest the p within the div
• missing keys in mapped components
• passing a boolean "scrolled" value to the underlying component (a div) is invalid: instead, make it so that that prop is not passed

The only one of these that could have a visual impact is the first one (p>div -> div>p), but it appears to be the same to me.

Here's before the change:

And here's after:

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Name	Status	Preview	Comments	Updated (UTC)
unleash-monorepo-frontend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Mar 18, 2024 2:20pm

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[thomasheartman]

Err, minor update: found that I might've attacked the wrong boolean prop? I'll check

[thomasheartman]

Nope! Just solved it in the wrong way.