[Backport 7.8] HST Link Tag removes scheme when path is set to http(s)://...

If you (mis)use <hst:link> tag with absolute URL path attribute, it removes the scheme part only.
For example,

<hst:link path="https://www.example.com/index.html" />

renders /www.example.com/index.html (note only 'https:/' part removed) since 10.

It used to return the path attribute value without changing any before until 7.9

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I think this is kind of regression by HSTTWO-3423. I saw this commit related to this:

commit 0b2161228e85935390605012eee9242380ac007f

HSTTWO-3423 When the pathInfo is used from the HstLinkTag, then while the pathInfo starts with http:, https: or // , the pathInfo should strip off those prefixes: We do not allow those.

But I think it should have returned the original path value without having to strip any forbidden prefixes (e.g, https: ), giving a warning optionally, without breaking any old behavior until 7.9.