Document impact on HCA Language Evaluations

[Manssur94]

• https://shopify.slack.com/archives/C06T9U6THPU/p1727292779002369
• https://shopify.slack.com/archives/C076Y3GSDJ4/p1727348458595059
• https://github.com/Shopify/help-center/issues/5137#issuecomment-2393957650