[Forwardport] Complete the fix for cache issue due to the currencies with no symbol #15903
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Original PR: #15902
Description
Using
getCurrencySymbol()
leads to a bug for currencies where there is no currency symbol - cache ends up being non-unique. Using currency code for caching is a more foolproof way.The issue has been partially fixed in
2.3-develop
branch in #14216 (Magento\ConfigurableProduct\Block\Product\View\Type\Configurable
)and #14684 (
Magento\CatalogWidget\Block\Product\ProductsList
).Manual testing scenarios
Contribution checklist