docs(changelog): add the dock icon-only wings entry

changelog.d/1457-dock-icon-only-wings.md

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+- Between 721px and 900px wide (tablet portrait, phone landscape), the
+  Location and Visual Presets dock wings show only their icons, so their
+  labels no longer spill over the voice control or take taps meant for the
+  mic button. The full name stays in the tooltip and accessible name, and the
+  Cyber layout keeps its labels (ZloyS, #1457).