[I] Invalid reuse of previous clause variable in succeeding CREATE clause [age]

[via GitHub]

Zainab-Saad opened a new issue, #1513:
URL: https://github.com/apache/age/issues/1513

   **Describe the bug**
   The succeeding CREATE clause is letting the reuse of variable of the 
previous CREATE.
   
   **How are you accessing AGE (Command line, driver, etc.)?**
   psql
   
   **What is the command that caused the error?**
   ```pgsql
   SELECT * FROM cypher('graph', $$ CREATE(n) CREATE(n)  RETURN n $$) AS 
(result agtype);
   ```
   creates one vertex
   ```
                                result                             
   ----------------------------------------------------------------
    {"id": 281474976710657, "label": "", "properties": {}}::vertex
   (1 row)
   ```
   
   **Environment (please complete the following information):**
   AGE master - PG16
   
   **Expected behavior**
   The second CREATE clause should give a `duplicate variable` error. Neo4j 
errors out as:
   ```
   Variable `n` already declared (line 1, column 18 (offset: 17))
   "CREATE(n) CREATE(n)  RETURN n"
                     ^
   ```
   


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