fix: remove node_type_registry from metaschema-schema (belongs in constructive-db only)

[pyramation]

Summary

Removes the node_type_registry table and seed fixture from packages/metaschema-schema. This table is not referenced by any code in pgpm-modules — it's only consumed at runtime in constructive-db (by rls_parser and embedding_chunks_trigger).

Changes:

• Removed deploy/revert/verify SQL files for node_type_registry/table and node_type_registry/fixtures/node_type_registry_seed
• Removed corresponding entries from pgpm.plan
• Repackaged compiled SQL (version aligned to 0.26.0 matching package.json)

Review & Testing Checklist for Human

• Verify no other package in pgpm-modules references node_type_registry at runtime
• Verify constructive-db still has its own node_type_registry table definition (it does — in packages/metaschema)

Notes

• Both metaschema-schema and metaschema-modules tests pass locally after this removal
• The compiled SQL version was bumped from 0.15.5 to 0.26.0 by pgpm package to match the current package.json version

Link to Devin session: https://app.devin.ai/sessions/8820b639fbd94ac8bfae86cfb01cf827
Requested by: @pyramation

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