build: update npm install command to use --legacy-peer-deps

This change modifies the build scripts to use --legacy-peer-deps flag when installing npm dependencies to resolve potential peer dependency conflicts during the build process. The change is applied to both bash (build.sh) and batch (build.bat) build scripts.

frontend/node_modules/@eslint/eslintrc/lib/config-array/override-tester.js

@@ -17,9 +17,9 @@
  * @author Toru Nagashima <https://github.com/mysticatea>
  */
 
-import assert from "node:assert";
-import path from "node:path";
-import util from "node:util";
+import assert from "assert";
+import path from "path";
+import util from "util";
 import minimatch from "minimatch";
 
 const { Minimatch } = minimatch;
@@ -94,7 +94,6 @@ class OverrideTester {
      * @param {string|string[]} excludedFiles The glob patterns for excluded files.
      * @param {string} basePath The path to the base directory to test paths.
      * @returns {OverrideTester|null} The created instance or `null`.
-     * @throws {Error} When invalid patterns are given.
      */
     static create(files, excludedFiles, basePath) {
         const includePatterns = normalizePatterns(files);
@@ -184,7 +183,6 @@ class OverrideTester {
      * Test if a given path is matched or not.
      * @param {string} filePath The absolute path to the target file.
      * @returns {boolean} `true` if the path was matched.
-     * @throws {Error} When invalid `filePath` is given.
      */
     test(filePath) {
         if (typeof filePath !== "string" || !path.isAbsolute(filePath)) {
@@ -198,8 +196,8 @@ class OverrideTester {
         ));
     }
 
+    // eslint-disable-next-line jsdoc/require-description
     /**
-     * Converts this instance to a JSON compatible object.
      * @returns {Object} a JSON compatible object.
      */
     toJSON() {
@@ -215,8 +213,8 @@ class OverrideTester {
         };
     }
 
+    // eslint-disable-next-line jsdoc/require-description
     /**
-     * Custom inspect method for Node.js `console.log()`.
      * @returns {Object} an object to display by `console.log()`.
      */
     [util.inspect.custom]() {