Move item type menu CSS override to SCSS

chrome/content/zotero/elements/itemBox.js

@@ -888,8 +888,6 @@
 			row.appendChild(labelWrapper);
 			row.appendChild(rowData);
 			this._infoTable.appendChild(row);
-			// Remove the default bold font from the label in shadow dom
-			this.querySelector("#item-type-menu").shadowRoot.querySelector("#label-box").style = "font-weight: normal";
 		}
 		
 		updateItemTypeMenuSelection() {

scss/elements/_itemBox.scss

@@ -43,6 +43,10 @@ item-box {
 			display: none;
 		}
 		
+		&::part(label-box) {
+			font-weight: normal;
+		}
+
 		&::part(label) {
 			margin-inline-start: 0;
 		}