fix: refactor AI Assistant page with bugs fixes

[thurstonchen]

Major changes of this PR:

• Update Standardization SQL and Aggregation SQL tabs of AI Assistant page, to make them have same UI of Editor page, so that users could run and test the AI-generated SQL in the same page.
• Fixed the table_name as session state key TODO issue, now the checkbox would show up only after sample data has been generated.
• Fixed the aggregation SQL generation issue when standardization dataset has been involved (a bug found by Gary).
• Added dependency/reference checking logic to stg/std/srv tables, therefore tables referenced by others cannot be renamed or deleted, a st.info() message will show up to remind end users.
  Exp:
  
• Refactored the table generation logic, to make it generate one table at a time/request.
  Exp:
  
• Added retry as well as exception handling for OpenAI requests.
• Downgrade numpy version to 1.23.5, since we notice an incompatible issue from pyspark while running Spark SQL during testing; details please refer to the below expired-deprecations (the last bullet point) since version of 1.24.0.
  https://numpy.org/devdocs/release/1.24.0-notes.html#expired-deprecations