fix(settings): hide All Invoices modal by default using display: none

- Changed default display from flex to none to prevent modal from appearing at bottom of page
- Modal now properly hidden until View All button is clicked

chat/public/settings.html

@@ -840,18 +840,17 @@
         bottom: 0;
         background: rgba(15, 23, 42, 0.6);
         backdrop-filter: blur(4px);
-        display: flex;
+        display: none;
         align-items: center;
         justify-content: center;
         z-index: 10000;
         opacity: 0;
-        visibility: hidden;
         transition: all 0.3s ease;
       }
 
       .invoice-modal-overlay.active {
+        display: flex;
         opacity: 1;
-        visibility: visible;
       }
 
       .invoice-modal {