Another solution for gradients (probably simpler - and also works for other scripts without having to change the code) is the addition (to gradients) of the English-language version.
These additional gradients should not be used in the English version.
ps. In fact, it script Iccii-Layer-Effects.scm use a lot of outdated procedures (only a few examples):called deprecated procedure 'gimp-drawable-get-name'.
It should call 'gimp-item-get-name' instead!
called deprecated procedure 'gimp-image-add-layer'.
It should call 'gimp-image-insert-layer' instead!
called deprecated procedure 'gimp-round-rect-select'.
It should call 'gimp-image-select-round-rectangle' instead!
called deprecated procedure 'gimp-selection-layer-alpha'.
It should call 'gimp-image-select-item' instead!
called deprecated procedure 'gimp-selection-load'.
It should call 'gimp-image-select-item' instead!
called deprecated procedure 'gimp-invert'.
It should call 'gimp-drawable-invert' instead!
called deprecated procedure 'gimp-image-lower-layer'.
It should call 'gimp-image-lower-item' instead!
called deprecated procedure 'gimp-ellipse-select'.
It should call 'gimp-image-select-ellipse' instead!
called deprecated procedure 'gimp-palette-set-foreground'.
It should call 'gimp-context-set-foreground' instead!
In Attachment (for testing):
- additional gradients English names,
- changed script (rename outdated procedures, change of location in the Gimp menu: Layer -> Layer FX (ICCII)
and added contex menu (right mouse button) in window "Layers Menu" -> Layer Effects FX