fix(metadata): drop a wrong destructuring annotation in the loader fixtures

`mock.calls` is `any[][]`, so `([sql]: [unknown])` is not assignable to the
callback `some`/`map` expect. Two errors, both mine, both caught by
`check:type-check-debt` re-measuring @objectstack/metadata at 91 against a
shrink-only ledger recording 89. Back to 89 with the annotations removed; the
parameter is inferred as `any[]` and carries no implicit-any.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01F3jdziLbAPGeceVNmSox5L

Author: claude

packages/metadata/src/loaders/database-loader.test.ts

@@ -638,7 +638,7 @@ describe('DatabaseLoader schema-sync failure reporting (#4728)', () => {
       // probes the column list before touching anything.
       expect(execute).toHaveBeenCalled();
       expect(
-        execute.mock.calls.some(([sql]: [unknown]) => /table_info|information_schema/i.test(String(sql))),
+        execute.mock.calls.some(([sql]) => /table_info|information_schema/i.test(String(sql))),
       ).toBe(true);
     });
 
@@ -665,7 +665,7 @@ describe('DatabaseLoader schema-sync failure reporting (#4728)', () => {
       // reading anything into the absence of that one statement.
       expect(execute, 'nothing ran — the emptiness below would prove nothing').toHaveBeenCalled();
       const overlayDdl = execute.mock.calls
-        .map(([sql]: [unknown]) => String(sql))
+        .map(([sql]) => String(sql))
         .filter((sql: string) => /idx_sys_metadata_overlay_active/i.test(sql));
       expect(overlayDdl).toEqual([]);
     });