Links to 📌 tag are considered broken/aspiring pages

[kolmone]

I have some links that are just shortcuts to specific tag pages, for example [[📌 todo|📝 Todo]]. These are listed on the Maintenance page as broken links/aspiring pages despite the links working just fine. The links also render in blue colour indicating a working link.

At the same time the links generated by a template listing all the tags in my space aren't considered broken:

```template
# 📌 Tags ({{count({tag select name})}})
{{#each {tag select name order by name}}}
{{#let @tag_name = name}}
_[[📌 {{name}}|#{{name}}({{count({tag where name = @tag_name})}})]]_ {{/let}}
{{/each}}

[kolmone]

Getting a bit more familiar with the codebase, seems like there's a quick and dirty fix for this by hardcoding more excluded prefixes in https://github.com/silverbulletmd/silverbullet/blob/main/plugs/index/page_links.ts#L259, but that doesn't seem sustainable if virtual pages become more of a thing.

The client has a way to check for links handled by plugs, used for example here, but from what I can tell plugs themselves don't have a way to do that.