refactor(cockpit): a provider words its text with getLocale and onLocaleChange from the ./i18n entry; the ./i18n/locale export, which gave only those two, is removed

changelog.d/1686-cockpit-subjects.md

@@ -1,12 +1,12 @@
 - Let an application add its own Cockpit subjects through
   `services.cockpitSubjects`. A provider supplies the subject's position,
-  heading and HUD (in the page's language, via the new `./i18n/locale`
-  export); the camera can follow it without the ground clamp, anchored
-  exactly on it, and a generic HUD adds source rows, a banner, a veil (off
-  under reduced motion) and a bottom progress line. The Rail and Transit
-  layers expose read and hold APIs so a selected train or vehicle can be
-  ridden, and `./layers/rail/paths` is exported; these exports and read APIs
-  are experimental. `docs/APPLICATION.md` shows a minimal provider. GEV
-  itself registers none, and entry to the built-in aircraft, satellite and
-  vessel views is unchanged; a provider's subject takes entry when it was
-  selected after them (Denis Groshev, @ZloyS, #1686).
+  heading and HUD (in the page's language, via `getLocale` and
+  `onLocaleChange` from `./i18n`); the camera can follow it without the
+  ground clamp, anchored exactly on it, and a generic HUD adds source rows, a
+  banner, a veil (off under reduced motion) and a bottom progress line. The
+  Rail and Transit layers expose read and hold APIs so a selected train or
+  vehicle can be ridden, and `./layers/rail/paths` is exported; that export
+  and the read APIs are experimental. `docs/APPLICATION.md` shows a minimal
+  provider. GEV itself registers none, and entry to the built-in aircraft,
+  satellite and vessel views is unchanged; a provider's subject takes entry
+  when it was selected after them (Denis Groshev, @ZloyS, #1686).