fix(lint): use block-level eslint-disable for multi-line require()

CI lint treats @typescript-eslint/no-require-imports as an error.
eslint-disable-next-line only covers the first line of a multi-line
destructuring; the closing require() on a later line is still flagged.
Switch to block-level disable/enable to cover the full statement.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: op7418

src/__tests__/unit/provider-resolver.test.ts

@@ -1442,13 +1442,14 @@ describe('resolveAuxiliaryModel (live wrapper)', () => {
     // The `source` field is the unambiguous discriminator. Asserting
     // source !== 'main_small' catches the exact pre-fix regression.
 
-    // eslint-disable-next-line @typescript-eslint/no-require-imports
+    /* eslint-disable @typescript-eslint/no-require-imports */
     const {
       createProvider,
       deleteProvider,
       getSetting,
       setSetting,
     } = require('../../lib/db');
+    /* eslint-enable @typescript-eslint/no-require-imports */
 
     const savedDefaultId = getSetting('default_provider_id') || '';