fix(tables): drop duplicate error toast on async import failure

Author: TheodoreSpeaks

apps/sim/app/workspace/[workspaceId]/tables/components/import-csv-dialog/import-csv-dialog.tsx

@@ -325,10 +325,9 @@ export function ImportCsvDialog({
               void cancelTableImport(workspaceId, table.id, data.importId).catch(() => {})
             }
           },
-          onError: (err) => {
+          onError: () => {
+            // The hook's onError surfaces the toast; just clear the tray indicator here.
             useImportTrayStore.getState().endUpload(table.id)
-            toast.error(getErrorMessage(err, 'Failed to start import'))
-            logger.error('Async CSV import failed to start', err)
           },
         }
       )

apps/sim/app/workspace/[workspaceId]/tables/tables.tsx

@@ -455,10 +455,9 @@ export function Tables() {
               useImportTrayStore.getState().cancel(result.tableId)
               void cancelTableImport(workspaceId, result.tableId, result.importId).catch(() => {})
             }
-          } catch (err) {
+          } catch {
+            // The hook's onError surfaces the toast; just clear the tray indicator here.
             useImportTrayStore.getState().endUpload(pendingId)
-            toast.error(`Failed to import ${file.name}`)
-            logger.error('Error uploading CSV:', err)
           }
         }