Feat: The query variables of the subsequent operators can reference the structured variables defined in the agent operator. #10866 (#10902)

### What problem does this PR solve?

Feat: The query variables of the subsequent operators can reference the
structured variables defined in the agent operator. #10866

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/agent/utils/filter-agent-structured-output.ts

@@ -0,0 +1,44 @@
+import { JSONSchema } from '@/components/jsonjoy-builder';
+import { Operator } from '@/constants/agent';
+import { isPlainObject } from 'lodash';
+
+export function filterAgentStructuredOutput(
+  structuredOutput: JSONSchema,
+  operator?: string,
+) {
+  if (typeof structuredOutput === 'boolean') {
+    return structuredOutput;
+  }
+  if (
+    structuredOutput.properties &&
+    isPlainObject(structuredOutput.properties)
+  ) {
+    const filterByPredicate = (predicate: (value: JSONSchema) => boolean) => {
+      const properties = Object.entries({
+        ...structuredOutput.properties,
+      }).reduce(
+        (pre, [key, value]) => {
+          if (predicate(value)) {
+            pre[key] = value;
+          }
+          return pre;
+        },
+        {} as Record<string, JSONSchema>,
+      );
+
+      return { ...structuredOutput, properties };
+    };
+
+    if (operator === Operator.Iteration) {
+      return filterByPredicate(
+        (value) => typeof value !== 'boolean' && value.type === 'array',
+      );
+    } else {
+      return filterByPredicate(
+        (value) => typeof value !== 'boolean' && value.type !== 'array',
+      );
+    }
+  }
+
+  return structuredOutput;
+}