with_js_link with stronger invalidation

[fonsp]

With this PR, all js links get invalidated when the cell they appear in becomes queued. This is necessary because one of the dependencies of the cell can define a function whose methods are being deleted by Pluto.

But it's a lot of new code for a rare issue.

Maybe this solution can also be used to solve https://github.com/JuliaPluto/PlutoHooks.jl/issues/15

[github-actions[bot]]

Try this Pull Request!

Open Julia and type:

julia> import Pkg
julia> Pkg.activate(temp=true)
julia> Pkg.add(url="https://github.com/fonsp/Pluto.jl", rev="with_js_link-with-proper-invalidation")
julia> using Pluto