Add PR to fix null pointer exception.

[jacklehamster]

Please do not update the README or Change Log, we will do this when we merge your PR.

This PR (delete as applicable)

• Fixes a bug

Describe the changes below:

Encountered the following null pointer exception:

Uncaught TypeError: Cannot set properties of undefined (setting 'controller')
    at FX.add (index.js:20011:39)
    at FX.addGlow (index.js:20023:27)
    at index.js:5204:132

This occurred only on Windows (VM on UTM, not sure if that made a difference) when trying to use special FX. This didn't happen on Mac.

The bug happened on all specials effects applied, on text or images (postFX.addGlow).
See code: https://github.com/jacklehamster/phaser-game/blob/main/src/hischool/game.ts#L2372