auto-claude: subtask-1-2 - Pass hideCloseButton={showFileExplorer} to DialogContent

Hide the modal's close button when the file explorer drawer is open
to prevent visual overlap with the drawer's close button.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

auto-claude-ui/src/renderer/components/TaskCreationWizard.tsx

@@ -455,6 +455,7 @@ export function TaskCreationWizard({
             "max-h-[90vh] p-0 overflow-hidden transition-all duration-300 ease-out",
             showFileExplorer ? "sm:max-w-[900px]" : "sm:max-w-[550px]"
           )}
+          hideCloseButton={showFileExplorer}
         >
           <div className="flex h-full min-h-0 overflow-hidden">
             {/* Form content */}