Fix "unintended_html_in_doc_comment" analysis errors

[brianquinlan]

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[natebosch]

@devoncarew This PR highlights a false positive for the lint. It doesn't understand square braces well enough and it looks like it flags [List<int>]. I think the change to `List<int>` is an improvement, but only slight compared to the obvious improvement from broken HTML. I didn't click on any of these cases when I skimmed the internal results, and the rollout is more churn than I expected.

I also forgot about the unpublished packages where they're unlikely to be noticed since we don't have any workflow where they are visible to users. I don't know whether any IDEs try to render the dartdoc to html for display, but that's the only use case I can imagine is affected.

[natebosch]

http and http_profile can both be bumped to the next version with -wip.

[devoncarew]

@devoncarew This PR highlights a false positive for the lint. It doesn't understand square braces well enough and it looks like it flags [List<int>]. I think the change to `List<int>` is an improvement, but only slight compared to the obvious improvement from broken HTML. I didn't click on any of these cases when I skimmed the internal results, and the rollout is more churn than I expected.

Gotcha; can you file an issue in the sdk for this? We have had some other recent false positives (dart-lang/sdk#56450) addressed - now fixed in head.

[natebosch]

dart-lang/sdk#56465

[brianquinlan]

http and http_profile can both be bumped to the next version with -wip.

Done