fix(handler): fix the bug for create table #mysql50#q.q should return…

[lylth]

Summary about this PR

fix the bug for create table #mysql50#q.q should return failure and actually return success (#487)

    1.When creating a table in the tianmu engine, add code to determine whether the table name is empty.
    2.Add issue corresponding to mtr test case.

Issue Number: close #487

Tests Check List

• [ ] Unit test
• [x] Integration test
• [ ] Manual test (add detailed scripts or steps below)
• [ ] No code

Changelog

• [ ] New Feature
• [x] Bug Fix
• [ ] Improvement
• [ ] Performance Improvement
• [x] Build/Testing/CI/CD
• [ ] Documentation
• [ ] Not for changelog (changelog entry is not required)

Documentation

• [ ] Affects user behaviors
• [ ] Contains syntax changes
• [ ] Contains variable changes
• [ ] Contains experimental features

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