fix: dropped temporary table should not be shown in system.temporary_tables

[SkyFan2002]

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Summary

The table meta of temp table is not cleared totally when it is replaced due to create or replace statement, which causes it to be displayed in the system tables. Thanks @xudong963 for reporting this.

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