feat(protection): document new provider deletion protection with clusterusages

[haarchri]

documents the following new crossplane feature we added for v2.3 crossplane/crossplane#7362

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[jbw976]

awesome @haarchri, thanks for following up to document this awesome feature! Added a couple comments for your consideration, but otherwise this is looking good! 🙇‍♂️

[jbw976]

also there are some Vale errors to fix 😉
https://github.com/crossplane/docs/actions/runs/25668772512/job/75348163891?pr=1090

[haarchri]

@jbw976 done - can you check again ?

[jbw976]

looks good @haarchri, thank you!! just the final question about if you intend to make the whole delete output copy-able, otherwise approved! ✅