Inconsistent and often changing link behavior when clicked

[JordanPaoletti]

Browser native functionality (at least Chromium based and FF) has the following behavior for clicking a web link:

Button	Behavior
left	open up link in current tab
middle	open up link in a new background tab
right	open up the context menu, doesn't open the link from click itself

In silver bullet, I've noticed that these link types often change between version and often don't hold consistent behavior with each other:

1. wikilinks
2. external links
3. links rendered through live queries/templates

Currently (based on running the app locally on the latest commit to main) it appears that external links (not within a live query) are no longer behaving correctly. Specifically, the behavior is:	Button	Behavior
left	open up link in a focused new tab (this may be desirable? however external links rendered in a live template have native functionality)
middle	moves the text cursor into the link and pastes (at least on linux, this doesn't occur in previous versions)
right	open up the link context menu if the cursor hasn't expanded the markdown, otherwise opens up a non-link context menu

This issue currently is mainly to address the external link behavior. That said, it would be nice to have tests that could pick up these changes as various versions often are all over the place with how links respond to the mouse.

[JordanPaoletti]

Should be noted that adding contenteditable = false to the link plugin will fix the unexpanded middle click behavior of external links

[zefhemel]

Thanks for reporting! I tweaked/fixed some of this already on my development branch (which I'll merge in the next few days). Let's review again once that's in.

[zefhemel]

Ok, I don't have a middle mouse button to try with, but the other reported issues should be fixed. Let me know if you still encounter issues!