Fixes edited .jsx files not triggering a TGUI recompile (#5562)

# About the pull request

Fixes `.jsx` files not triggering a TGUI recompile in build.bat when
they've been edited.
Currently you need to manually run `yarn tgui:build` (or equivalent) to
make any changes appear in-game.

I double checked TG's version of this just to make sure I didn't miss
something obvious, and it looks like they've only recently fixed this
themselves: tgstation/tgstation#80630

# Explain why it's good for the game

Editing a TGUI file should trigger a rebuild.

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
Nothing player-facing.

tools/build/build.js

@@ -176,7 +176,7 @@ export const TguiTarget = new Juke.Target({
     "tgui/.yarn/install-target",
     "tgui/webpack.config.js",
     "tgui/**/package.json",
-    "tgui/packages/**/*.+(js|cjs|ts|tsx|scss)",
+    "tgui/packages/**/*.+(js|jsx|cjs|ts|tsx|scss)",
   ],
   outputs: [
     "tgui/public/tgui.bundle.css",