fix(dashboard): corrige saída do modo apresentação

Ao clicar em "Encerrar" ou "Sair da tela cheia" no modo apresentação,
agora desativa corretamente o modo TV (remove param ?tv=1), evitando
que o fullscreen seja reativado automaticamente pelo useEffect.

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

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

src/components/dashboards/dashboard-builder.tsx

@@ -1231,7 +1231,13 @@ export function DashboardBuilder({ dashboardId, editable = true, mode = "edit" }
             variant="secondary"
             size="sm"
             className="pointer-events-auto gap-2 rounded-full border border-slate-200 bg-white/90 px-4 py-2 text-sm font-semibold text-slate-900 shadow-lg transition hover:bg-white"
-            onClick={() => handleToggleFullscreen({ requestedByUser: true })}
+            onClick={() => {
+              if (enforceTv) {
+                handleToggleTvMode()
+              } else {
+                handleToggleFullscreen({ requestedByUser: true })
+              }
+            }}
           >
             <Minimize2 className="size-4" />
             Sair da tela cheia
@@ -1267,7 +1273,7 @@ export function DashboardBuilder({ dashboardId, editable = true, mode = "edit" }
           activeIndex={activeSectionIndex}
           onChange={setActiveSectionIndex}
           fullscreen={isFullscreen}
-          onExitPresentation={() => handleToggleFullscreen({ requestedByUser: true })}
+          onExitPresentation={handleToggleTvMode}
         />
       ) : null}