🎨 style: Address Minor UI Refresh Issues (#6552)

* 🎨 style: Adjust isSelected svg layout of ModelSpecItem

* style: fix modelSpec URL image beeing off-center; style: selected svg centered vertically

* style: Update CustomMenu component to use rounded-lg and enhance focus styles

* style: SidePanel top padding same as NewChat

* fix: prevent unnecessary space rendering in SplitText component

* style: Fix class names and enhance layout in Badge components

* feat: disable temporary chat when in chat

* style: handle > 1 lines in title Landing

* feat: enhance dynamic margin calculation based on line count and content height in Landing component

client/src/components/Chat/Menus/Endpoints/CustomMenu.tsx

@@ -77,8 +77,9 @@ export const CustomMenu = React.forwardRef<HTMLDivElement, CustomMenuProps>(func
                   autoSelect
                   render={combobox}
                   className={cn(
-                    'h-10 w-full rounded border-none bg-transparent px-2 text-base',
+                    'h-10 w-full rounded-lg border-none bg-transparent px-2 text-base',
                     'sm:h-8 sm:text-sm',
+                    'focus:outline-none focus:ring-0 focus-visible:ring-2 focus-visible:ring-white',
                   )}
                 />
               </div>