Add datetime type convert e2e test

[zihaoAK47]

Fixes #ISSUSE_ID.

Changes proposed in this pull request:

• Add datetime type convert e2e test
• Append e2e tests for Fix federated query LocalDateTime conversion #30935 using the t_product_extend table

---

Before committing this PR, I'm sure that I have checked the following options:

• My code follows the code of conduct of this project.
• I have self-reviewed the commit code.
• I have (or in comment I request) added corresponding labels for the pull request.
• I have passed maven check locally : ./mvnw clean install -B -T1C -Dmaven.javadoc.skip -Dmaven.jacoco.skip -e.
• I have made corresponding changes to the documentation.
• I have added corresponding unit tests for my changes.

[strongduanmu]

LGTM, merged.