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-scope/lib/pattern-visitor.js

@@ -22,6 +22,8 @@
   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+/* eslint-disable no-undefined */
+
 import estraverse from "estraverse";
 import esrecurse from "esrecurse";
 
@@ -33,12 +35,9 @@ const { Syntax } = estraverse;
  * @returns {any} Last elment
  */
 function getLast(xs) {
-    return xs.at(-1) || null;
+    return xs[xs.length - 1] || null;
 }
 
-/**
- * Visitor for destructuring patterns.
- */
 class PatternVisitor extends esrecurse.Visitor {
     static isPattern(node) {
         const nodeType = node.type;
@@ -67,7 +66,7 @@ class PatternVisitor extends esrecurse.Visitor {
 
         this.callback(pattern, {
             topLevel: pattern === this.rootPattern,
-            rest: lastRestElement !== null && lastRestElement !== void 0 && lastRestElement.argument === pattern,
+            rest: lastRestElement !== null && lastRestElement !== undefined && lastRestElement.argument === pattern,
             assignments: this.assignments
         });
     }