Bug: <script> tags with relative path in `src` get the file contents placed in `src` on build

What's happening

A script tag with a relativesrc path like <script src="./test.js"></script>

gets compiled into <script src="[CONTENTS OF test.js]"></script>

NOTE: That does not happen with absolute paths: /js/script.js or full URLs

Expected Behavior

Marko does nothing and the script tag remains "as is". I was caught totally by surprise that Marko/Run was doing anything at all with something I considered "plain html".

Ok, nothing in Marko is plain HTML... but usually boundaries and side effects are clear. In this case, I don't know what's going on here.

How to reproduce:

1. Create a new Run project

2. Create a src/routes/test.js file

   export default "the script content";
   

3. Add <script src="./test.js"></script> to +layout.marko

   

4. Build

This is easier to see when using the static adapter...

But it happens with the default adapter too

Reproduce the issue in a new Run project with src/routes/test.js and the script tag in +layout.marko, then compare build output for relative, absolute, and full-URL src values. Check the build path used by the static adapter and default adapter. Done means relative script src values remain unchanged in both adapters, with coverage for the reported case.