How to change moderator icon

Development
3

I’ve adjusted this but there has been no change.

    "assets": {
        "icons-sprite": "assets/mod-crown.svg"
    }

Is my spritesheet valid? I notice it looks different than other spritesheets e.g. assets/spritesheet.svg · main · Manuel Kostka / Discourse / Themes / Heroes · GitLab

I tried removing style="display: none;" from the svg tag in my spritesheet but that did not help either.