fix: StreamVersionMismatched when using CTAS in multi statement trans…

[SkyFan2002]

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Summary

In the past, the implicit commit of DDLs in multi-statement transactions occurred after the bind phase, which cleared the QueryContext.table_cache. As a result, when the statement was executed, calling get_table() would access the meta service to fetch the latest TableMeta.

However, for some queries, the TableMeta was determined during the bind phase and cached in Metadata.tables, so get_table() was no longer called thereafter. Therefore, this PR moves the implicit commit of DDLs in multi-statement transactions to a point before the bind phase.

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is