docs(analytics): add table for default user props

[machikoyasuda]

closes #1841

What this PR does

• Adds a table for default user props, with definitions from https://help.amplitude.com/hc/en-us/articles/215562387-Appendix-Amplitude-User-Property-Definitions
• Removes explicit reference to Littlepay. People can see if it they click through to the Amplitude docs.
• Reaching a compromise with regard to linking to the Benefits application or not:

1. On first reference, the app is now referred to like this: For people who might think "app" means a mobile application, I use the phrase currently live at https://..... But, I do not link the actual link - because we are trying to discourage "drive-by clicks" that artificially inflate our click-through numbers. (Though remember, if we want to filter out People Who Came To Benefits via the Documentation or any Calitp.org website/social media, we can do that too -- so it's not a huge porblem.)

I thought about linking back to the documentation front page - especially because it has the visual screenshot example, but I thought that would confuse the confused people even more. So I settled on showing a text link without it hyperlinked. If someone is TRULY confused about what the site they are reading documentation about, they can copy and paste that link and go there themselves.

On second and further references, I remove links entirely.

And lastly, for user property example values - again - I do NOT link to the app itself.

The point here isn't for someone to go to the Help page. It's to serve as an example for someone who wants to know what a "URL that the event came from" could like.

cc @thekaveman @indexing - Check it out live on the preview site here: https://benefits-1846--cal-itp-previews.netlify.app/product-and-design/analytics/

[github-actions]

Coverage report

This PR does not seem to contain any modification to coverable code.

[github-actions]

Preview url: https://benefits-1846--cal-itp-previews.netlify.app

[machikoyasuda]

@thekaveman https://data.amplitude.com/public-doc/hdhfmlby2e?categories=id%3D1702329985270%26group%3Dcategories%26type%3DString%26operator%3Dis%26values%255B0%255D%3Dcore%26dateValue%255Btype%255D%3DSINCE

Does this link go to the Core filtered page for you? It does for me. So I didn't change it.

[thekaveman]

@thekaveman

Does this link go to the Core filtered page for you? It does for me. So I didn't change it.

Yep @machikoyasuda you are right, it works for me too (both in the original site and this new version) -- so I'm not sure what I was seeing last week. Sorry about that!

[thekaveman]

These changes are all great and LGTM, thank you!