fix(modern-template): nav & toc active state breaks with external urls

[Lulalaby]

The current problem

When having an external url defined in the toc.yml, the active state toggler sets all external links & the current page as active

Screenshots

Proposed Solution

By checking whether the items hostname or port differs from window.location, we can set the active state correctly.

Screenshots

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (cf2d134) 77.56% compared to head (548659c) 77.57%.
Report is 5 commits behind head on main.

❗ Current head 548659c differs from pull request most recent head 378967f. Consider uploading reports for the commit 378967f to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9038   +/-   ##
=======================================
  Coverage   77.56%   77.57%           
=======================================
  Files         591      591           
  Lines       24577    24577           
=======================================
+ Hits        19064    19065    +1     
+ Misses       5513     5512    -1     

see 2 files with indirect coverage changes

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[Lulalaby]

@yufeih i'm unsure about how to specially add a test for the "active" variable, but I can't spend more time to figure it out.
Gonna go in a few hours to my doc, kinda emergency surgical intervention.. so ig i'm out for a while.

I hope that pr is good to go, otherwise I'd be happy if someone could fix it.

[Lulalaby]

I noticed that it's difficult to test in forks. Can we change that to take the repo / org from var?

[Lulalaby]

btw what's up with /home/runner/work/docfx/docfx/samples/seed/articles/images/seed.jpg: No template bundle found for Resource, model will be ignored.

I noticed it since upgrading docfx

Sorry for the ci spam also, I tried fixing the snapshot ci. Doesn't work tho due to limited workflow permissions.

[yufeih]

Thank you @Lulalaby !