Fix classic cart shipping UI and COD payout

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Summary

• Fix request pickup COD payout display when COD deficit values are positive.
• Refactor classic cart shipping totals into compact Ship To and Shipment rows.
• Render classic cart shipment options through the same SelectWoo dropdown behavior used by checkout while preserving native WooCommerce shipping radios in DOM.
• Hide shipment choices and shipping discount rows until a destination is selected.
• Align the classic checkout insurance checkbox markup with WooCommerce checkbox structure for theme compatibility.

Business logic safety

• Preserves WooCommerce shipping method names, rate IDs, hidden radio inputs, AJAX event flow, destination persistence, COD, insurance, coupon, and fee recalculation contracts.
• Keeps source/package parity by rebuilding the distributable zip.

Tests

• vendor/bin/paratest --configuration paratest.xml --filter ShopVerseBlockCheckoutCompatibilityTest
• make zip
• make test