Fix ordering logic for tables with non-orderable column types

[mosesacknals139]

Fixes #

This PR fixes an issue where tables containing circle columns failed to load due to invalid ordering logic. The update ensures that only columns supporting deterministic ordering are used when constructing ORDER BY clauses.

Technical details

The root cause was that msar.get_total_order previously allowed column types without valid B-Tree operator support (such as circle) to be included in the ordering logic. This caused SQL errors when PostgreSQL attempted to apply ordering on unsupported data types.

The function has been updated to strictly validate orderable columns by:

• Enforcing use of the btree access method via pg_am
• Requiring opcdefault = true to ensure default operator classes only
• Supporting both opcintype and opckeytype for correct operator resolution
• Eliminating duplicate column entries using SELECT DISTINCT

Updated file

• db/sql/05_msar.sql

Verification

• Confirmed that tables containing circle columns now load correctly.
• Verified that the system falls back to valid sortable columns (such as primary keys) without error.

Screenshots
N/A (backend logic change only)

Checklist

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• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no visible errors.

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bash

[mosesacknals139]

I closed this PR due to unrelated commits. See #5152