i18n(pricing-coefficients): wrap BODY_TYPES/TRANSMISSION_TYPES CheckboxList options

The two CheckboxList options passed raw Vehicle::BODY_TYPES and
Vehicle::TRANSMISSION_TYPES arrays — now they run through I18n::opts()
so the RO values translate at display. +6 translations for the enum
values that weren't yet in dict (Crossover, Pickup, Minivan, DSG,
DCT, AMT).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lang/en.json

@@ -35,6 +35,7 @@
   "AI: preț recomandat": "AI: recommended price",
   "AI: recomandări": "AI: recommendations",
   "AI: sugerează diagnostic": "AI: suggest diagnosis",
+  "AMT (Robot)": "AMT (Robot)",
   "API Tokens": "API Tokens",
   "AUTOCRM_001": "AUTOCRM_001",
   "AYS...": "AYS...",
@@ -479,6 +480,7 @@
   "Crescător": "Ascending",
   "Critic": "Critical",
   "Cronologic": "Chronologically",
+  "Crossover": "Crossover",
   "Cu TVA": "With VAT",
   "Cu jante": "Cu jante",
   "Culoare": "Color",
@@ -500,7 +502,9 @@
   "Când": "When",
   "Când & unde": "When & where",
   "DCT": "DCT",
+  "DCT (Dual-Clutch)": "DCT (Dual-Clutch)",
   "DOT": "DOT",
+  "DSG": "DSG",
   "Da, confirmă": "Yes, confirm",
   "Da, șterge": "Yes, delete",
   "Dacă e gol, generăm 10 caractere random.": "If empty, we generate 10 random characters.",
@@ -1046,6 +1050,7 @@
   "Min qty": "Min qty",
   "Min.": "Min.",
   "Minim": "Minim",
+  "Minivan": "Minivan",
   "Minute": "Minutes",
   "Mod": "Mode",
   "Mod recepție": "Receive mode",
@@ -1301,6 +1306,7 @@
   "Phone alt": "Alt. phone",
   "Photo": "Photo",
   "Photos": "Photos",
+  "Pickup": "Pickup",
   "Pierdut": "Lost",
   "Pierdute": "Pierdute",
   "Piese": "Parts",