tui: increase prompt mode toggle height for better clickability

packages/app/src/components/prompt-input.tsx

@@ -1334,7 +1334,7 @@ export const PromptInput: Component<PromptInputProps> = (props) => {
             <div class="shrink-0">
               <div
                 data-component="prompt-mode-toggle"
-                class="relative h-6 w-[68px] rounded-[4px] bg-surface-inset-base border border-[0.5px] border-border-weak-base p-0 flex items-center gap-1 overflow-visible"
+                class="relative h-7 w-[68px] rounded-[4px] bg-surface-inset-base border border-[0.5px] border-border-weak-base p-0 flex items-center gap-1 overflow-visible"
               >
                 <div
                   class="absolute inset-y-0 left-0 w-[calc((100%-4px)/2)] rounded-[4px] bg-surface-raised-stronger-non-alpha shadow-[var(--shadow-xs-border)] transition-transform duration-200 ease-out will-change-transform"