[docs] Add new "Expired package version" error type

[oliviertassinari]

• The first commit takes [license] Polish error messages #6881 (review) review in, by @joserodolfofreitas.
• The second commit normalizes the errors with https://www.notion.so/mui-org/Technical-writing-7e55b517ac2e489a9ddb6d0f6dd765de#85219822c3194b6f8a49ee08ea82b90a.
• The third commit more clearly explains the expired license. It's a step toward better supporting perpetual and subscription licenses, at the same time.

We could still do a lot more to improve the DX but I didn't want to have more than 100 LOCs on a single PR and keep this a low time investment from my end. My assumption is that the DX correlates with the conversion rate to a higher plan.

https://deploy-preview-6937--material-ui-x.netlify.app/x/introduction/licensing/#validation-failures

[mui-bot]

	Messages
📖	Netlify deploy preview: https://deploy-preview-6937--material-ui-x.netlify.app/

These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	862.6	1,305.3	1,305.3	1,088.5	160.118
Sort 100k rows	ms	898.4	1,297.6	1,212.1	1,152.98	135.94
Select 100k rows	ms	257.7	377.5	302.5	305.32	41.412
Deselect 100k rows	ms	199.9	471	261	293.02	92.744

Generated by 🚫 dangerJS against 56574d5

[joserodolfofreitas]

Looking great with the normalized error messages 👌