feat: hide Marktsignale tab on Inserate detail drawer — direct listings have no market signal data

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/supply/MyListings.tsx

@@ -423,7 +423,7 @@ export default function MyListings() {
         slotProps={{ paper: { sx: { width: { xs: '100%', sm: 560 } } } }}
       >
         {detailId && (
-          <PropertyDetailView propertyId={detailId} onClose={() => setDetailId(null)} hideTabs={['Matchability']} />
+          <PropertyDetailView propertyId={detailId} onClose={() => setDetailId(null)} hideTabs={['Matchability', 'Marktsignale']} />
         )}
       </Drawer>