[Shopify] Automatic Transaction Posting

[onbuyuka]

Summary

Introduces automatic posting of Shopify order/refund payment transactions as general journal lines when the related invoice or credit memo is posted in Business Central. This is a reworked, hardened version of the feature originally proposed in #6515.

Changes

New functionality

• Automatic-posting setup on Shpfy Payment Method Mapping (table + page): Post Automatically, Auto-Post Jnl. Template, Auto-Post Jnl. Batch (validated to require a balancing account on the batch).
• Visibility: Auto-Post Enabled flow field on Shpfy Order Transaction (table + page).
• Automatic posting: when a sales invoice/credit memo linked to a Shopify order/refund is posted, the related successful, not-yet-posted transactions are posted as customer payments if their payment method mapping is set up for automatic posting.
• Filtering: Filter Postable Transactions / Clear Filter actions on the Shopify Transactions list.

Prerequisites to post automatically

• On the Shpfy Payment Method Mapping: Post Automatically = true and Auto-Post Jnl. Template / Auto-Post Jnl. Batch filled in (the batch must have a balancing account).
• The transaction relates to a mapping that is set up for automatic posting.

Design notes (safety around the posting routine)

• Posting runs from Sales-Post.OnAfterPostSalesDoc, which fires after the document has been committed. No broad COMMIT is added to the posting routine.
• PreviewMode and CommitIsSuppressed postings are respected — automatic posting is skipped in those cases so previews and caller-controlled transactions are never disturbed.
• Payment posting is synchronous (via Gen. Jnl.-Post Batch), independent of the Post with Job Queue setting.
• Posting is best-effort: a failure is logged as a Shopify skipped record and never blocks, reverses, or errors the document posting, and never leaves an orphaned journal line behind.

Tests

Added ShpfyAutoPostTransTest.Codeunit.al (ID 139627) covering:

• Auto-Post Jnl. Batch validation with / without a balancing account and with an empty value.
• Auto-posting an order transaction when Post Automatically is true, and not posting when it is false.
• Auto-posting multiple transactions of an order.
• Posting only transactions linked to an auto-post mapping (and skipping non-linked ones).
• Auto-posting a refund transaction on credit memo posting.
• Synchronous posting even when Post with Job Queue is enabled.
• Best-effort behavior: on a payment-posting failure the document still posts, no ledger entry is created, no journal line is left behind, and a skipped record is logged.
• Preview posting does not auto-post and does not break the preview.

Fixes AB#620951