fix(utils/dynamicRequire): pass moduleName explicitly as string

fixes the Webpack warning:
"WARNING in ./src/public/app/services/utils.ts 249:15-34
Critical dependency: the request of a dependency is an expression"

as we now explicitly pass the moduleName as string and not "expression"
source:
https://stackoverflow.com/questions/42908116/

src/public/app/services/utils.ts

@@ -308,7 +308,9 @@ function dynamicRequire(moduleName: string) {
     if (typeof __non_webpack_require__ !== "undefined") {
         return __non_webpack_require__(moduleName);
     } else {
-        return require(moduleName);
+        // explicitly pass as string and not as expression to suppress webpack warning
+        // 'Critical dependency: the request of a dependency is an expression'
+        return require(`${moduleName}`);
     }
 }