feat(i18n): complete Hebrew locale for dev

Fill in every domain added since the first Hebrew pass (help, tours,
assistant*, studio*, wanderer*, journey, demo, ferratas and the rest),
retranslate strings whose English changed, and give every count group
its Hebrew one/two forms. Register he as a non-Latin locale for the
untranslated ratchet, add the Hebrew 429 message, and count 28 locales
in the tours locale spec.

client/src/api/rateLimitMessage.ts

@@ -22,6 +22,7 @@ const RATE_LIMIT_MESSAGES: Record<string, string> = {
   tr: 'Çok fazla deneme. Lütfen daha sonra tekrar deneyin.',
   ar: 'محاولات كثيرة جدًا. يرجى المحاولة لاحقًا.',
   az: 'Həddindən çox cəhd edildi. Bir az sonra yenidən cəhd edin.',
+  he: 'יותר מדי ניסיונות. נסו שוב מאוחר יותר.',
   id: 'Terlalu banyak percobaan. Coba lagi nanti.',
   ja: '試行回数が多すぎます。時間をおいて再度お試しください。',
   ko: '시도 횟수가 너무 많습니다. 잠시 후 다시 시도해 주세요.',