tokenmagicFX ignores foundry routePrefix for assets paths

[js-murph]

tokenmagicFX seems to ignore the routePrefix foundry option when configured for determining its default asset paths.

For example if routePrefix = "thing" all content is going to be at the base path of https://mydomain/thing/. The current behaviour of tokenmagicFX results in the following...

GET https://mydomain:8080/modules/tokenmagic/fx/assets/distortion-1.png 404
ImageResource.ts:188 Uncaught (in promise) Event {isTrusted: true, type: "error", target: null, currentTarget: null, eventPhase: 0, …}

It should however be doing...

GET https://mydomain:8080/myprefix/modules/tokenmagic/fx/assets/distortion-1.png

[Feu-Secret]

Done.