fix : replaced pickle.load with json and used context managers in Word-Building data.py

[tmdeveloper007]

Summary of What Has Been Done

Replaced all pickle.load() and pickle.dump() calls in games/Word-Building/data.py with safe JSON-based serialization using json.load() and json.dump(). All file operations now use Python context managers (with statements) to ensure handles are properly closed even on exceptions.

Changes Made

• Replaced import pickle with import json
• Renamed words.bat to words.json to reflect the new JSON format
• Replaced pickle.load(file) with json.load(file)
• Replaced pickle.dump(words, file) with json.dump(words, file, ensure_ascii=False, indent=2)
• Wrapped both read and write file operations in with context managers, eliminating manual file.close() calls
• Added guard to prevent duplicate word entries in DataAdding

Impact it Made

• Eliminates arbitrary code execution risk from pickle deserialization (CVE class vulnerability)
• Prevents file handle leaks in error scenarios by using context managers
• JSON format is human-readable for debugging and is language-agnostic

Closes #1841
Closes #1842

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