i18n(sv): address review (export buttons, singular, consistent terms)

- EXP. {slot} and EXPORT so the Recent Imagery export buttons fit and A
  and B read apart; EXPORT listed as same-as-English.
- {count} HÖRT / hört for one aircraft; the plural rule in sv.md no
  longer lists HÖRDA.
- INTE FARA ÖVER throughout; VÄ/HÖ for left/right (V is west on the
  compass); STYRD KURS vs KURS Ö. GRUND; MIK in the first-run tip.
- Label-first counts for sightings and standby cameras; neuter audio
  states; OSÄKER on chip and status line; KN for knots; the ellipsis
  character; Ladda ned and VÄNTLÄGE throughout; Olagligt ingripande;
  FÖRHANDSVY for the preview flag and authoring heading.
- sv.json in the format scope; Swedish in language-code order in
  TRANSLATORS.md; glossary row reduced to incident → händelse; 29
  letterless entries dropped from same-as-english.json.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

scripts/format-scope.json

@@ -1295,6 +1295,7 @@
   "src/i18n/locales/ja.json",
   "src/i18n/locales/pt.json",
   "src/i18n/locales/ru.json",
+  "src/i18n/locales/sv.json",
   "src/i18n/locales/uk.json",
   "src/i18n/locales/zh-CN.json",
   "src/i18n/locales/zh-Hant.json",