Don't minify the JS of the examples in Walt Explorer

# Bug Report
## Overview
The JS section of the Walt explorer is now minified, which makes it impossible to understand how it connects the WASM to the rest of the browser environment at a glance:

## Expected
Show example code

## Actual
Show mangled, minified example code

## Example

Start by locating the Walt Explorer implementation that renders the JavaScript section and tracing how its example code is produced. Confirm the current output is minified, then verify that the Explorer displays readable, unminified JavaScript showing the browser-to-WASM connection.

Written by the indexing model from the issue text.