UI: Clarify changelog wording for disabled token adoption

The disabled list-item background in Select/Autocomplete/Combobox is a newly added declaration, not a swap of an existing neutral token.

Author: ciampo

packages/ui/CHANGELOG.md

@@ -4,7 +4,7 @@
 
 ### Code Quality
 
--   `Button`, `AlertDialog`, and disabled `Select`/`Autocomplete`/`Combobox` list items: Reference the tone-specific `brand`/`error` disabled color tokens for disabled states, instead of the `neutral` disabled tokens, to match each element's tone (no visual change) ([#79124](https://github.com/WordPress/gutenberg/pull/79124)).
+-   `Button` and `AlertDialog`: Reference the tone-specific `brand`/`error` disabled color tokens for disabled states instead of the `neutral` ones, to match each element's tone. Disabled `Select`/`Autocomplete`/`Combobox` list items also adopt the `brand` disabled background token. No visual change ([#79124](https://github.com/WordPress/gutenberg/pull/79124)).
 
 ## 0.15.0 (2026-06-10)