[Update] Update Modal: Change the cuda version description to imply the meaning NVIDIA GPU only.

and fix design a bit.

src-ui/app/modal_controller/update_modal/UpdateModal.module.scss

@@ -52,6 +52,7 @@
     width: 16rem;
     justify-content: space-between;
     position: relative;
+    flex-shrink: 0;
 }
 
 .deny_button, .accept_button {
@@ -124,6 +125,12 @@
     }
 }
 
+.version_desc_container {
+    display: flex;
+    flex-direction: column;
+    gap: 0.4rem;
+}
+
 .version_desc_wrapper {
     display: flex;
     align-items: center;