fix(query): Fix the issue of the virtual column bind

[b41sh]

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Summary

This PR addresses several issues related to virtual columns in Databend, focusing on stability and correctness.

Key Changes:

1. Fix: Virtual Column Binder Cast Issue:

   • Addresses a bug where virtual columns could not be found during the binding process due to cast rewrite virtual column.

2. Fix: Merge Into Stream Column Deletion:

   • Resolves an issue in MERGE INTO statements where deleting a stream column could incorrectly lead to the deletion of a virtual column. This fix ensures that only the intended stream column is removed, preserving the integrity of virtual columns.

3. Improvement: Virtual Column Data Read Validation:

   • Implements a check for row counts when reading virtual column data. This enhancement ignore corrupted virtual column data, preventing potential errors and improving data reliability.

4. Feature: Experimental Virtual Column Setting:

   • Introduces a new setting, enable_experimental_virtual_column, to control the virtual column feature. This setting is disabled by default, reflecting the experimental nature of the feature and allowing users to opt-in.
   • This setting provides a safeguard against unexpected issues, and we will add more tests to improve this feature.

Future Work:

• Add more comprehensive tests to cover various virtual column scenarios.
• Continue to refine and improve the virtual column functionality based on user feedback and testing results.

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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