Feat/arabic language support (#13516)

### What problem does this PR solve?

This PR implements comprehensive Arabic language support for the RAGFlow
application. The changes include:
- Complete Arabic translation of all UI text elements in the web
interface
- RTL (right-to-left) layout support for Arabic content
- Localization updates for all supported languages (ar, bg, de, en, es,
fr, id, it, ja, pt-br, ru, vi, zh-traditional, zh)
- UI component adjustments to properly display Arabic text and support
RTL layout

The implementation ensures that Arabic-speaking users can fully interact
with the application in their native language with proper text rendering
and layout direction.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

<img width="2866" height="1617" alt="image"
src="https://github.com/user-attachments/assets/f2751b34-1b65-4867-b81d-a1068c17b9b7"
/>

---------

Co-authored-by: Yingfeng <yingfeng.zhang@gmail.com>

web/src/pages/dataflow-result/index.module.less

@@ -25,7 +25,7 @@
   .pageContent {
     flex: 1;
     width: 100%;
-    padding-right: 12px;
+    padding-inline-end: 12px;
     overflow-y: auto;
 
     .spin {
@@ -50,7 +50,7 @@
 
   .pageFooter {
     padding-top: 10px;
-    padding-right: 10px;
+    padding-inline-end: 10px;
     height: 32px;
   }
 }
@@ -77,7 +77,7 @@
     height: 20px;
 
     .text {
-      margin-left: 10px;
+      margin-inline-start: 10px;
     }
   }
 }