fix: standardize i18n pluralization to two-part format (#9371)

## Summary

- Converts redundant three-part pluralization patterns (`zero | singular
| plural`) to standard two-part format (`singular | plural`) across 11
locale files
- Only converts patterns where the zero form duplicates the singular or
plural form
- Retains three-part patterns where the zero form provides distinct
content (e.g. `"No items selected"`) or where the language
linguistically requires all three forms (Russian singular/paucal/plural)

## Context

Vue i18n selects plural forms based on the number of choices:

**3-part** `"{count} nodes | {count} node | {count} nodes"`:
| count | index | result |
|-------|-------|--------|
| 0 | 0 (zero) | "0 nodes" |
| 1 | 1 (singular) | "1 node" |
| 2+ | 2 (plural) | "N nodes" |

**2-part** `"{count} node | {count} nodes"`:
| count | index | result |
|-------|-------|--------|
| 0 | 1 (plural) | "0 nodes" |
| 1 | 0 (singular) | "1 node" |
| 2+ | 1 (plural) | "N nodes" |

Output is identical — the zero form was always a duplicate of the plural
form. This PR removes that redundancy.

## Changes

| Locale | Keys changed |
|--------|-------------|
| en, es, fr, pt-BR, ar, tr | 5 (`nodesCount`, `asset`, `errorCount`,
`downloadsFailed`, `exportFailed`) |
| ja, ko, fa | 3 (`asset`, `nodesCount`, `downloadsFailed`) |
| ru | 2 (`downloadsFailed`, `exportFailed`) |
| zh-TW | 2 (`nodesCount`, `downloadsFailed`) |

## Test plan

- [ ] Verify pluralization renders correctly for count=0, count=1,
count=2+ in affected UI areas
- [ ] Spot-check non-English locales (especially Russian which retains
3-part for linguistically distinct forms)

- Fixes #9277

---------

Co-authored-by: GitHub Action <action@github.com>
Co-authored-by: Christian Byrne <cbyrne@comfy.org>

src/locales/ar/main.json

@@ -862,7 +862,7 @@
     "promptExecutionError": "فشل تنفيذ الطلب"
   },
   "errorOverlay": {
-    "errorCount": "{count} أخطاء | {count} خطأ | {count} أخطاء",
+    "errorCount": "{count} خطأ | {count} أخطاء",
     "seeErrors": "عرض الأخطاء"
   },
   "essentials": {
@@ -909,7 +909,7 @@
     "downloadFailed": "فشل تحميل \"{name}\"",
     "exportCompleted": "تحميل ZIP جاهز",
     "exportError": "فشل التصدير",
-    "exportFailed": "{count} فشل في التصدير | {count} فشل في التصدير | {count} عمليات تصدير فشلت",
+    "exportFailed": "{count} فشل في التصدير | {count} عمليات تصدير فشلت",
     "exportFailedSingle": "فشل إنشاء تصدير ZIP",
     "exportStarted": "يتم تجهيز تحميل ZIP...",
     "exportingAssets": "جاري تصدير العناصر",
@@ -928,7 +928,7 @@
     "amount": "الكمية",
     "apply": "تطبيق",
     "architecture": "الهندسة المعمارية",
-    "asset": "{count} أصل | {count} أصل | {count} أصول",
+    "asset": "{count} أصل | {count} أصول",
     "audioFailedToLoad": "فشل تحميل الصوت",
     "audioProgress": "تقدم الصوت",
     "author": "المؤلف",
@@ -1114,7 +1114,7 @@
     "nodeSlotsError": "خطأ في فتحات العقدة",
     "nodeWidgetsError": "خطأ في عناصر واجهة العقدة",
     "nodes": "العُقَد",
-    "nodesCount": "{count} عقدة | {count} عقدة | {count} عقدة",
+    "nodesCount": "{count} عقدة | {count} عقدة",
     "nodesRunning": "العُقَد قيد التشغيل",
     "none": "لا شيء",
     "nothingToCopy": "لا يوجد ما يمكن نسخه",
@@ -2295,7 +2295,7 @@
   "progressToast": {
     "allDownloadsCompleted": "اكتملت جميع التنزيلات",
     "downloadingModel": "جاري تنزيل النموذج...",
-    "downloadsFailed": "{count} فشل في التنزيل | {count} فشل في التنزيل | {count} فشل في التنزيل",
+    "downloadsFailed": "{count} فشل في التنزيل | {count} فشل في التنزيل",
     "failed": "فشل",
     "filter": {
       "all": "الكل",