i18n(it): apply review round 1

Three-model review (astra, sol, fable): 53 findings accepted, 14 rejected
or deferred. Fixes the meaning of "Downed aircraft", "Compilation", the
satellite ground-distance caveat and the browser-key restriction note;
agreement for Full, Provider Settings and Space Missions; fork directions
that compose with every modifier; a radio aria label that reads as a
phrase; imperative tooltips. Shortens the labels that clipped: ESP. A/B,
search placeholder, QUOTA · FT, PREC, Esri imagery note.

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

src/i18n/same-as-english.json

@@ -260,6 +260,7 @@
     "World",
     "audio {state}",
     "dB",
+    "feed status|live",
     "ft",
     "hPa",
     "installation class|BASE",