fix(query): fix double panic if enable_experimental_aggregate_hashtable

[zhang2014]

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Summary

fix(query): fix double panic if enable_experimental_aggregate_hashtable

• Fixes #[Link the issue here]

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 

[zhang2014]

unexpected value in hash_table_payload if enable_experimental_aggregate_hashtable. CC: @sundy-li @Freejww

[BohuTANG]

It seems we need more unit tests for enable_experimental_aggregate_hashtable=1

[github-actions]

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[github-actions]

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[sundy-li]

How do you catch this error, we don't enable enable_experimental_aggregate_hashtable by default now.

Oh, I found it's enabled as global when testing performance in that tenant.

It seems we need more unit tests for enable_experimental_aggregate_hashtable=1

Yes, but it's not enabled, will cover more tests after we support this with cluster and spill.