fix: added unique numeric id creator to avoid numbering render errors

src/util/convenience-functions.ts

@@ -1,12 +1,14 @@
 import { nanoid } from "nanoid/non-secure";
 
-let currentCount = 0;
-
 // Twip - twentieths of a point
 export const convertMillimetersToTwip = (millimeters: number): number => Math.floor((millimeters / 25.4) * 72 * 20);
 
 export const convertInchesToTwip = (inches: number): number => Math.floor(inches * 72 * 20);
 
-export const uniqueNumericId = (): number => ++currentCount;
+export const uniqueNumericIdCreator = (initial = 0): (() => number) => {
+    let currentCount = initial;
+
+    return () => ++currentCount;
+};
 
 export const uniqueId = (): string => nanoid().toLowerCase();