Fix #7724: Resolve Option 1 Name from existing Shopify Variant records

[tVisionDeb]

Summary

Fixes #7724: Variant option names should be resolved from existing Shopify Variant records instead of using hardcoded values.

Changes

• Modified ShpfyProductExport.Codeunit.al to call ResolveOption1Name() procedure when syncing product variant option names
  • Added new local procedure ResolveOption1Name() that queries existing variants for the correct option name
  • Ensures consistency with Shopify's actual variant configuration

Validation

• Compiled successfully on BC-28 (Runtime 17.0): 0 errors
• Compiled successfully on BC-29 (Runtime 18.0): 0 errors
• Test app compiled successfully on both runtimes: 0 errors

Test Execution Results

Full test suite executed on BC-28 (container BC-20260506, version 28.0.46665.48932):

• 190 test methods passed, 20 failed across 26 codeunits (24 passed, 2 failed)
• All product/variant-related tests passed (Codeunit 139601 Shpfy Create Product Test - all methods pass)

Failing tests (pre-existing, unrelated to this change):

1. Codeunit 139606 - Shpfy Shipping Test (1 failure):

   • UnitTestExportFulfillmentServiceShipment - Fails with API version check error ("The Shopify Admin API used by your current Shopify connector is no longer supported"). This is a platform-level version mismatch in the test environment.

2. Codeunit 139608 - Shpfy Orders API Test (19 failures):

   • All fail with: "The field Customer Disc. Group of table Sales Line contains a value (GCMURLJYCQ) that cannot be found in the related table (Customer Discount Group)"
   • This is a pre-existing test data setup issue where randomized customer data references a non-existent Customer Discount Group record. Unrelated to product export logic.

Relevant passing tests (product export with variants):

• UnitTestCreateTempProductFromItemWithVariants
• UnitTestCreateTempProductFromItemWithVariantsAndExtendedText
• UnitTestCreateTempProductFromItemWithVariantsAndItemAttributes
• UnitTestCreateTempProductFromItemWithVariantsAndSKUIsVariantCode
• (and 40+ additional product/variant test methods)