"Cannot find module" error when calling query within another query

[minajevs]

Describe the bug
On a server, calling a query from another query throws an error Error [ERR_MODULE_NOT_FOUND]: Cannot find module ....

To Reproduce
Sample repo

1. Create 2 very basic queries

query getFirstName {
  fn: import {getFirstName} from "@src/getFirstName",
  entities: []
}

query getFullName {
  fn: import {getFullName} from "@src/getFullName",
  entities: []
}

2. Implement first query and import some external function into the query file:

import { type GetFirstName } from "wasp/server/operations";
import { capitalize } from "./capitalize"; // <-------- Important external import! 

export const getFirstName: GetFirstName<never, string> = () => {
  return capitalize("john");
};

3. Implement second query and call first query from that

import { getFirstName, type GetFullName } from "wasp/server/operations";

export const getFullName: GetFullName<never, string> = async () => {
  const firstName = await getFirstName(); // <-------- Calling first query!
  return `${firstName} Smith`;
};

4. Call a query from client

 const { data } = useQuery(getFullName);

Observed behavior
Server crashes with the following error:

[ Server!] Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/***/dev/wasp-bug-sample/.wasp/out/sdk/wasp/dist/ext-src/capitalize' imported from /Users/***/dev/wasp-bug-sample/.wasp/out/sdk/wasp/dist/ext-src/getFirstName.js
[ Server!]     at finalizeResolution (node:internal/modules/esm/resolve:257:11)
[ Server!]     at moduleResolve (node:internal/modules/esm/resolve:913:10)
[ Server!]     at defaultResolve (node:internal/modules/esm/resolve:1037:11)
[ Server!]     at ModuleLoader.defaultResolve (node:internal/modules/esm/loader:650:12)
[ Server!]     at #cachedDefaultResolve (node:internal/modules/esm/loader:599:25)
[ Server!]     at ModuleLoader.resolve (node:internal/modules/esm/loader:582:38)
[ Server!]     at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:241:38)
[ Server!]     at ModuleJob._link (node:internal/modules/esm/module_job:132:49) {
[ Server!]   code: 'ERR_MODULE_NOT_FOUND',
[ Server!]   url: 'file:///Users/***/dev/wasp-bug-sample/.wasp/out/sdk/wasp/dist/ext-src/capitalize'

Removing external import (i.e. removing import { capitalize } from "./capitalize"; and inlining capitalize function) fixes the issue.

Environment

• Apple Sillicon
• Node.js v22.11.0
• Wasp 15.0

Additional context

It is possible to "work around" the issue by commenting out problematic line, thefore causing build error, and then uncommenting the line again. I would speculate that there's a race condition during build time and external module (capitalize) is being built later than query (getFirstName)