[14.0][FIX] l10n es aeat vat special prorrate purchase wrong tax amount when prorrate

[eantones]

No description provided.

[Copilot]

Pull Request Overview

This PR fixes tax amount calculation issues in the Spanish AEAT VAT special prorate module for purchase orders. The fix addresses problems with context passing and dependency tracking that were causing incorrect tax calculations when prorate rules are applied.

• Updates prorate_context functions to return tuple format instead of dictionary
• Modifies tax computation to handle the new tuple-based context format
• Adds missing dependencies for proper recomputation triggers

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
l10n_es_aeat_vat_special_prorrate_purchase/models/purchase_order.py	Updates prorate context format and adds missing dependencies for purchase order calculations
l10n_es_aeat_vat_special_prorrate/models/account_tax.py	Modifies tax factor computation to handle tuple-based prorate context and adds context dependency
l10n_es_aeat_vat_special_prorrate/models/account_move.py	Updates prorate context function to return tuple format for consistency