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/lib/cli-engine/load-rules.js

@@ -9,8 +9,8 @@
 // Requirements
 //------------------------------------------------------------------------------
 
-const fs = require("node:fs"),
-	path = require("node:path");
+const fs = require("fs"),
+    path = require("path");
 
 const rulesDirCache = {};
 
@@ -24,23 +24,23 @@ const rulesDirCache = {};
  * @param {string} cwd Current working directory
  * @returns {Object} Loaded rule modules.
  */
-module.exports = function (relativeRulesDir, cwd) {
-	const rulesDir = path.resolve(cwd, relativeRulesDir);
+module.exports = function(relativeRulesDir, cwd) {
+    const rulesDir = path.resolve(cwd, relativeRulesDir);
 
-	// cache will help performance as IO operation are expensive
-	if (rulesDirCache[rulesDir]) {
-		return rulesDirCache[rulesDir];
-	}
+    // cache will help performance as IO operation are expensive
+    if (rulesDirCache[rulesDir]) {
+        return rulesDirCache[rulesDir];
+    }
 
-	const rules = Object.create(null);
+    const rules = Object.create(null);
 
-	fs.readdirSync(rulesDir).forEach(file => {
-		if (path.extname(file) !== ".js") {
-			return;
-		}
-		rules[file.slice(0, -3)] = require(path.join(rulesDir, file));
-	});
-	rulesDirCache[rulesDir] = rules;
+    fs.readdirSync(rulesDir).forEach(file => {
+        if (path.extname(file) !== ".js") {
+            return;
+        }
+        rules[file.slice(0, -3)] = require(path.join(rulesDir, file));
+    });
+    rulesDirCache[rulesDir] = rules;
 
-	return rules;
+    return rules;
 };