i18n: restore key parity after the Jalali calendar

The translation parity test fails on main again after the Jalali
calendar landed: the two newest locales, he and sk, were missed when
the twelve Jalali month names were added - they get the same Latin
transliterations every other non-Persian locale received.

fa in turn carried four keys that do not exist in en and are not
referenced anywhere in the code (the email_composer.text_direction
block and settings.templates.image_too_large) - removed, as the
suite's no-extra-keys check demands.

locales/fa/common.json

@@ -681,12 +681,7 @@
     "recipient_email_placeholder": "آدرس ایمیل",
     "recipient_name_placeholder": "نام نمایشی",
     "autocomplete_search_server": "جستجو در سرور",
-    "autocomplete_searching": "در حال جستجو...",
-    "text_direction": {
-      "toggle": "تغییر جهت متن (چپ‌به‌راست / راست‌به‌چپ)",
-      "ltr": "چپ‌به‌راست",
-      "rtl": "راست‌به‌چپ"
-    }
+    "autocomplete_searching": "در حال جستجو..."
   },
   "confirm_dialog": {
     "confirm": "تأیید",
@@ -1885,8 +1880,7 @@
       "validation": {
         "empty": "نام قالب الزامی است",
         "too_long": "نام قالب باید ۲۰۰ کاراکتر یا کمتر باشد"
-      },
-      "image_too_large": "حجم تصویر بیش از حد مجاز (حداکثر ۱ مگابایت)"
+      }
     },
     "files": {
       "display": {

locales/he/common.json

@@ -2823,7 +2823,19 @@
       "sep": "ספט׳",
       "oct": "אוק׳",
       "nov": "נוב׳",
-      "dec": "דצמ׳"
+      "dec": "דצמ׳",
+      "far": "Farvardin",
+      "ord": "Ordibehesht",
+      "kho": "Khordad",
+      "tir": "Tir",
+      "mor": "Mordad",
+      "sha": "Shahrivar",
+      "meh": "Mehr",
+      "aba": "Aban",
+      "aza": "Azar",
+      "dey": "Dey",
+      "bah": "Bahman",
+      "esf": "Esfand"
     },
     "nav_open_menu": "פתח תפריט",
     "webcal_action": {

locales/sk/common.json

@@ -2723,7 +2723,19 @@
       "sep": "sep",
       "oct": "okt",
       "nov": "nov",
-      "dec": "dec"
+      "dec": "dec",
+      "far": "Farvardin",
+      "ord": "Ordibehesht",
+      "kho": "Khordad",
+      "tir": "Tir",
+      "mor": "Mordad",
+      "sha": "Shahrivar",
+      "meh": "Mehr",
+      "aba": "Aban",
+      "aza": "Azar",
+      "dey": "Dey",
+      "bah": "Bahman",
+      "esf": "Esfand"
     },
     "notifications": {
       "event_created": "Udalosť bola vytvorená",