Adapt "Append to note" Icon to make it possible to differentiate from "Create new note"

I tried to find existing issues. Sorry if i failed to find it, if one exists.

Is your feature request related to a problem? Please describe.

Sometimes i use nextcloud-notes to collect links or texts related to a specific problem. I might add links from firefox - or other browsers - and want to append them to a note.

However, the icon to append to a note or to create a new note is exactly the same, making it impossible to distinguish in the UI.
See screenshot in Additional Context section below.

Describe the solution you'd like
A very easy solution would be to change the "Append to Note" icon, by adding a "Plus" sign to the icon, to indicate that it will "add" to something. Maybe someone more experienced in design can comment if this would be something the average user would understand. Maybe the "new note" icon would need some adaption as well to signal that it creates a new note.
But for me it would be enough to just differentiate "Create new" from "Add/Append to existing"

Describe alternatives you've considered
I don't see any feasible alternative (but i'm happy to hear if there is). One had to change the app / OS to show the action-item title (like "New Note" or "Append to Note" everytime somehow.

Additional context
A screenshot showing the situation in my Fierfox - the two icons from nextcloud-note apps have different functionality, but share the same icon:

The issue names no files, tests, or entry points. Locate the Android share-target UI that renders the "Append to Note" and "Create new note" actions, then compare their icons and verify that the two actions are visually distinguishable in the browser sharing flow.