fix: allow tab-menu-dropdown to open on non-active tabs

Agent-Logs-Url: https://github.com/ThisIs-Developer/Markdown-Viewer/sessions/6f843c1b-8417-45ef-a03b-28de6cec7c0e

Co-authored-by: ThisIs-Developer <109382325+ThisIs-Developer@users.noreply.github.com>

Author: Copilot

desktop-app/resources/js/script.js

@@ -582,7 +582,8 @@ This is a fully client-side application. Your content never leaves your browser
       item.appendChild(titleSpan);
       item.appendChild(menuBtn);
 
-      item.addEventListener('click', function() {
+      item.addEventListener('click', function(e) {
+        if (e.target.closest('.tab-menu-btn')) return;
         switchTab(tab.id);
       });
 
@@ -706,7 +707,8 @@ This is a fully client-side application. Your content never leaves your browser
       item.appendChild(titleSpan);
       item.appendChild(menuBtn);
 
-      item.addEventListener('click', function() {
+      item.addEventListener('click', function(e) {
+        if (e.target.closest('.tab-menu-btn')) return;
         switchTab(tab.id);
         closeMobileMenu();
       });

script.js

@@ -582,7 +582,8 @@ This is a fully client-side application. Your content never leaves your browser
       item.appendChild(titleSpan);
       item.appendChild(menuBtn);
 
-      item.addEventListener('click', function() {
+      item.addEventListener('click', function(e) {
+        if (e.target.closest('.tab-menu-btn')) return;
         switchTab(tab.id);
       });
 
@@ -706,7 +707,8 @@ This is a fully client-side application. Your content never leaves your browser
       item.appendChild(titleSpan);
       item.appendChild(menuBtn);
 
-      item.addEventListener('click', function() {
+      item.addEventListener('click', function(e) {
+        if (e.target.closest('.tab-menu-btn')) return;
         switchTab(tab.id);
         closeMobileMenu();
       });