Feature/mineru improvements (#11938)

我已在下面的评论中用中文重复说明。

### What problem does this PR solve?

## Summary
This PR enhances the MinerU document parser with additional
configuration options, giving users more control over PDF parsing
behavior and improving support for multilingual documents.

## Changes

### Backend (`deepdoc/parser/mineru_parser.py`)
- Added configurable parsing options:
- **Parse Method**: `auto`, `txt`, or `ocr` — allows users to choose the
extraction strategy
- **Formula Recognition**: Toggle for enabling/disabling formula
extraction (useful to disable for Cyrillic documents where it may cause
issues)
- **Table Recognition**: Toggle for enabling/disabling table extraction
- Added language code mapping (`LANGUAGE_TO_MINERU_MAP`) to translate
RAGFlow language settings to MinerU-compatible language codes for better
OCR accuracy
- Improved parser configuration handling to pass these options through
the processing pipeline

### Frontend (`web/`)
- Created new `MinerUOptionsFormField` component that conditionally
renders when MinerU is selected as the layout recognition engine
- Added UI controls for:
  - Parse method selection (dropdown)
  - Formula recognition toggle (switch)
  - Table recognition toggle (switch)
- Added i18n translations for English and Chinese
- Integrated the options into both the dataset creation dialog and
dataset settings page

### Integration
- Updated `rag/app/naive.py` to forward MinerU options to the parser
- Updated task service to handle the new configuration parameters

## Why
MinerU is a powerful document parser, but the default settings don't
work well for all document types. This PR allows users to:
1. Choose the best parsing method for their documents
2. Disable formula recognition for Cyrillic/non-Latin scripts where it
causes issues
3. Control table extraction based on document needs
4. Benefit from automatic language detection for better OCR results

## Testing
- [x] Tested MinerU parsing with different parse methods
- [x] Verified UI renders correctly when MinerU is selected/deselected
- [x] Confirmed settings persist correctly in dataset configuration

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

---------

Co-authored-by: user210 <user210@rt>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

rag/llm/ocr_model.py

@@ -67,7 +67,7 @@ class MinerUOcrModel(Base, MinerUParser):
         server_url = server_url or self.mineru_server_url
         return self.check_installation(backend=backend, server_url=server_url)
 
-    def parse_pdf(self, filepath: str, binary=None, callback=None, parse_method: str = "raw", **kwargs):
+    def parse_pdf(self, filepath: str, binary=None, callback=None, parse_method: str = "raw",**kwargs):
         ok, reason = self.check_available()
         if not ok:
             raise RuntimeError(f"MinerU not found or server not accessible: {reason}. Please install it via: pip install -U 'mineru[core]'.")
@@ -82,5 +82,6 @@ class MinerUOcrModel(Base, MinerUParser):
             server_url=self.mineru_server_url,
             delete_output=self.mineru_delete_output,
             parse_method=parse_method,
+            **kwargs
         )
         return sections, tables