[Bug]: createAsset and base64 images

[Jmr3366]

Describe the Bug

The current implementation of createAsset uses a string variables in hopes to determine the image type.
When it comes to raw base64 images, this check fails.

You can't take a base64 encoded valid image string and use it with createAsset

To Reproduce

In a macro, do this:

[h: testB64 ="iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAwMCAO+XnWQAAAAASUVORK5CYII="]
[r: asset = createAsset("baselineTest", testB64)]

This error is returned:
java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because the return value of "java.net.URI.getScheme()" is null error executing expression asset = createAsset("baselineTest", testB64).

Expected Behaviour

I should be able to take any valid base64 image and use it with createAsset.

Screenshots

No response

MapTool Info

1.18.6

Desktop

Win 11

Additional Context

No response