fix: use excalidraw asset path in fonts when exporting to svg (#5065)

* fix: use excalidraw asset path in fonts when exporting

* fix

* fix

* introduce env variables and determine asset path correctly

* fix snaps

* use env vars to determine pkg name and version

* update docs

* quotes

src/utils.ts

@@ -575,6 +575,9 @@ export const arrayToMap = <T extends { id: string } | string>(
 export const isTestEnv = () =>
   typeof process !== "undefined" && process.env?.NODE_ENV === "test";
 
+export const isProdEnv = () =>
+  typeof process !== "undefined" && process.env?.NODE_ENV === "production";
+
 export const wrapEvent = <T extends Event>(name: EVENT, nativeEvent: T) => {
   return new CustomEvent(name, {
     detail: {