feat(query): reject alter view definition changes

[youngsofun]

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Summary

Reject ALTER VIEW operations that replace a view's query or output-column definition.

This change was split out of the data-lineage PR #20198 so its behavioral impact can be reviewed independently. #20198 no longer contains or depends on this commit. Merging this PR first would nevertheless give lineage a simpler invariant: a view's stored definition cannot change without replacing the view and its dependency metadata together.

Motivation

The current ALTER VIEW <name> [(columns)] AS <query> path replaces the stored SQL definition in place. Once view dependencies are persisted, allowing this operation without atomically replacing all object and column lineage can leave metadata describing the previous query.

For now, the binder returns Unimplemented for query-definition changes. The existing view remains unchanged after a rejected statement.

This does not affect independent operations such as setting tags. CREATE OR REPLACE VIEW remains the explicit replacement path. A future change can add:

ALTER VIEW <name> RENAME TO <new_name>

when rename semantics are implemented.

The obsolete ALTER VIEW definition-replacement sqllogic suite is removed, and the existing CREATE VIEW suite verifies that a rejected ALTER does not damage the view.

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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[TCeason]

LGTM. Please modify the doc.