fix: remove incorrect assertion in collecting dropped table ids

[dantengsky]

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Summary

The last table id in the TableIdHistoryIdent KV pair, is NOT necessarily to be the largest one.

fixes: #18794

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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Docker Image for PR

• tag: pr-18780-469760f-1758777347

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