i18n(native): excuse the TREK Cloud brand, mark Email same-as-en, exempt the quota counts

The strict i18n checks, which the feature-branch CI does not run, catch three
things now that the native strings exist in every locale: TREK Cloud read as an
untranslated English phrase (it is a product name, like Vacay and Atlas, so add
it to the brand list); Email left identical in Italian, Indonesian and
Vietnamese, where it is the local word too (mark same-as-en) and in Greek (give
it a Greek term); and the GB and AI-document quota strings carrying {n} without
being plural groups (both are figures that never show a singular, like the other
unit-symbol counts in NOT_PLURAL).

shared/src/i18n/gr/native.ts

@@ -63,7 +63,7 @@ const native: TranslationStrings = {
   'native.claim.invalid': 'Τρία ή περισσότερα γράμματα, αριθμοί και παύλες.',
   'native.claim.reserved': 'Αυτή η διεύθυνση είναι δεσμευμένη.',
   'native.claim.free': 'Διαθέσιμη',
-  'native.claim.emailLabel': 'Email',
+  'native.claim.emailLabel': 'Ηλ. ταχυδρομείο',
   'native.claim.emailHint': 'Για τον λογαριασμό και τις αποδείξεις σας.',
   'native.claim.subscribe': 'Εγγραφή για {price}',
   'native.claim.cancelled': 'Η αγορά ακυρώθηκε.',

shared/src/i18n/id/native.ts

@@ -61,7 +61,7 @@ const native: TranslationStrings = {
   'native.claim.invalid': 'Tiga huruf, angka, atau tanda hubung atau lebih.',
   'native.claim.reserved': 'Alamat itu dicadangkan.',
   'native.claim.free': 'Tersedia',
-  'native.claim.emailLabel': 'Email',
+  'native.claim.emailLabel': 'Email', // same-as-en
   'native.claim.emailHint': 'Untuk akun dan tanda terima Anda.',
   'native.claim.subscribe': 'Berlangganan seharga {price}',
   'native.claim.cancelled': 'Pembelian dibatalkan.',

shared/src/i18n/it/native.ts

@@ -62,7 +62,7 @@ const native: TranslationStrings = {
   'native.claim.invalid': 'Almeno tre lettere, numeri o trattini.',
   'native.claim.reserved': 'Questo indirizzo è riservato.',
   'native.claim.free': 'Disponibile',
-  'native.claim.emailLabel': 'Email',
+  'native.claim.emailLabel': 'Email', // same-as-en
   'native.claim.emailHint': 'Per il tuo account e le ricevute.',
   'native.claim.subscribe': 'Abbonati per {price}',
   'native.claim.cancelled': 'Acquisto annullato.',

shared/src/i18n/vi/native.ts

@@ -62,7 +62,7 @@ const native: TranslationStrings = {
   'native.claim.invalid': 'Từ ba chữ cái, chữ số và dấu gạch nối trở lên.',
   'native.claim.reserved': 'Địa chỉ đó đã được giữ chỗ.',
   'native.claim.free': 'Có sẵn',
-  'native.claim.emailLabel': 'Email',
+  'native.claim.emailLabel': 'Email', // same-as-en
   'native.claim.emailHint': 'Cho tài khoản và biên nhận của bạn.',
   'native.claim.subscribe': 'Đăng ký với giá {price}',
   'native.claim.cancelled': 'Đã hủy mua.',