Compatibility with LV v0.20

[msaraiva]

• Fix Malformed HTML in rendered.js
• Fix error when passing special chars as literals inside an expression

[dougw-bc]

I have run into some other issues that are not fixed with this branch related to LiveComponents, I made a comment about it here: #713

[dougw-bc]

Ignore my previous comment, this branch is OK on liveview 0.20.3

Users do need to be careful, and make sure all LiveComponent's use static html at the root - but it is an easy enough change.

For example:

In previous versions the following works OK, (but maybe poorly optimized?):

defmodule StaticComponent do
 @moduledoc "Static component used by a livecomponent"
 use Surface.Component 
 
 slot default
 
 def render(assigns) do
  ~F"""
   <div>
    <#slot />
   </div>
  """
 end
end

defmodule ALiveComponent do
 @moduledoc "live component with static component at root"
 use Surface.LiveComponent 

 def render(assigns) do
   ~F"""
    <StaticComponent>
      <div>
        Some LiveComponent Content
      </div>
    </StaticComponent>
   """
 end
end

defmodule ALiveView do
 @moduledoc "LiveView that renders the livecomponent"
 use Surface.LiveView

 def render(assigns) do
   ~F"""
    <ALiveComponent id="a_live_component" />
   """
 end
end

This PR requires the following change to the above example live component (additional wrapping static node):

defmodule ALiveComponent do
  @moduledoc "additional static html node at root of live component"
  use Surface.LiveComponent 

  def render(assigns) do
    ~F"""
     <div>
      <StaticComponent>
        <div>
          Some LiveComponent Content
        </div>
      </StaticComponent>
     </div> 
    """
  end
end