Fix other incorrect usages of split

src/common/util.ts

@@ -0,0 +1,10 @@
+/**
+ * Split a string up to the delimiter. If the delimiter doesn't exist the first
+ * item will have all the text and the second item will be an empty string.
+ */
+export const split = (str: string, delimiter: string): [string, string] => {
+	const index = str.indexOf(delimiter);
+	return index !== -1
+		? [str.substring(0, index).trim(), str.substring(index + 1)]
+		: [str, ""];
+};