feat: continue on linkfilter page if enhancement-no-linkfilter enabled

[nolddor]

Hi @xPaw today I noticed enhancement-no-linkfilter was not working well at my end on my profile links when those were manually introduced by myself long ago.

I am not aware of Steam being doing this but is a well-known trick among profile designer that using either:
1.- https://steamcommunity.com:/linkfilter/?url=
2.- https://steamcommunity.com:443/linkfilter/?url=

Allows you to hide the domain rendering. Since those are valid URLs and works as intended, I think we must catch those as well. Hence my PR.

With https://steamcommunity.com:/linkfilter/?url= -or- https://steamcommunity.com:443/linkfilter/?url=

With https://steamcommunity.com/linkfilter/?url=

That's why people use it when introducing the filter themselves at their profiles.

BR

EDIT:
Scope of this PR has changed, and now my proposal is to auto-continue if for any reason we land on linkfilter page.
See PR comments for further details.

[xPaw]

wtf. this seems like an issue that needs to be reported to valve

[nolddor]

Any official site to report such bugs? is https://hackerone.com the right place for this, any idea?

[xPaw]

Yeah.

[nolddor]

Problem was reported there. Let's see what they say about.

Anyway, even if they fix the rendering issue I believe there is nothing preventing people to use such value as a valid linkfilter URL so not sure how to do feel about merging it in the base code.

[nolddor]

Had some more time to check into this today, seems like even with the feature enabled. If you paste a link into the Steam Chat you will land on the linkfilter page. Same for external links or indexed links by google, duckduckgo and similar...

I believe make sense to auto-continue if for some reason we land on linkfilter page. This will solve also my initial problem of using a non-standard linkfilter href.

Let me know if this makes more sense to you or not.
Cheers