## Context
Adds the same validations such as UPDATE without where clause, or
destructive query into the QueryEditor of explorer / notebooks. Kicks in
for both notebook cells and query tab
<img width="887" height="718" alt="image"
src="https://github.com/user-attachments/assets/27757d41-e5df-4473-9278-ec30ff2306ca"
/>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **New Features**
- Added safety checks for potentially destructive database queries.
- Queries may pause for confirmation before execution.
- Added optional RLS statement handling during query execution.
- Added warnings and cancellation support for pending query runs.
- Added read-only mode to prevent SQL edits and proposal acceptance.
- **Bug Fixes**
- SQL commits now use the current editor content.
- Discarding a proposed query is handled directly and reliably.
- **Tests**
- Added coverage for query approval, cancellation, and RLS-enabled table
creation.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Joshen Lim
a18253f7c7