Stats: Memoize gated intervals selector

[tyxla]

Proposed Changes

Memoize the getGatedIntervals selector.

Note that #99170 takes care of the other similar warning that appears on this page.

Why are these changes being made?

The getGatedIntervals selector currently triggers a bunch of re-renders because it generates new objects on every run, and that's unnecessary since nothing really changes.

By memoizing the selector, we remove a bunch of unnecessary re-renders and fix this warning:

Testing Instructions

• Open /stats/day/:site where :site is a site on a high-tier plan.
• Verify you no longer see the warning from the screenshot.

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-155ad9f305ddf099ddc79d079d59c962327b1122

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-155ad9f305ddf099ddc79d079d59c962327b1122&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:commit-155ad9f305ddf099ddc79d079d59c962327b1122&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~52 bytes added 📈 [gzipped])

name   parsed_size           gzip_size
stats       +100 B  (+0.0%)      +52 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[mirka]

Looks good 🚀

[Initsogar]

Looks good 👍🏽
Thanks for addressing these warnings.