fix: loop not choose bool var value

web/app/components/workflow/nodes/loop/use-config.ts

@@ -68,7 +68,7 @@ const useConfig = (id: string, payload: LoopNodeType) => {
         varType: varItem.type,
         variable_selector: valueSelector,
         comparison_operator: getOperators(varItem.type, getIsVarFileAttribute(valueSelector) ? { key: valueSelector.slice(-1)[0] } : undefined)[0],
-        value: '',
+        value: varItem.type === VarType.boolean ? 'false' : '',
       })
     })
     setInputs(newInputs)