TheNumberFormatPartTypeRegistry interface was missing theapproximatelySign part type, which is used byIntl.NumberFormat.formatRangeToParts() when ranges round to approximately the same value.

This caused TypeScript compilation errors when filtering format parts:

constnf=newIntl.NumberFormat("en-US",{style:"currency",currency:"EUR",maximumFractionDigits:0,});// This would fail with TS error before the fixnf.formatRangeToParts(value.from,value.to).filter((part)=>part.type!=="approximatelySign").map((part)=>part.value).join("");

Changes:

• AddedapproximatelySign: never; toNumberFormatPartTypeRegistry interface insrc/lib/es2023.intl.d.ts
• Updated ES2023 intl test to include validation of the new part type
• Updated test baselines to reflect the change

The change follows the existing pattern used across ES versions for extending theNumberFormatPartTypeRegistry with new part types, ensuring TypeScript properly recognizesapproximatelySign as a valid format part type.

Fixes#61960.

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