gitignore the sources text files (#22408)

### What does this PR do?

### How did you verify your code works?

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

scripts/build.mjs

@@ -1,5 +1,3 @@
-#!/usr/bin/env node
-
 import { spawn as nodeSpawn } from "node:child_process";
 import { chmodSync, cpSync, existsSync, mkdirSync, readFileSync } from "node:fs";
 import { basename, join, relative, resolve } from "node:path";
@@ -14,6 +12,10 @@ import {
   startGroup,
 } from "./utils.mjs";
 
+if (globalThis.Bun) {
+  await import("./glob-sources.mjs");
+}
+
 // https://cmake.org/cmake/help/latest/manual/cmake.1.html#generate-a-project-buildsystem
 const generateFlags = [
   ["-S", "string", "path to source directory"],