feat: localize settings subpanels UI strings

[StartNight]

Summary

This PR localizes all static text elements across the 5 settings subpanels (Sound, Video, Controls, User Interface, and Key Bindings) in MainSettingsMenuPanel.prefab, achieving complete localization coverage for the in-game Settings system.

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Key Changes

1. String Tables Expansion

• UI Shared Data.asset: Added 64 unique fixed m_Id key entries covering:
  • Common labels (Low, Medium, High, Off, Default Settings).
  • Audio settings (Master Volume, Music Volume, Effects Volume, Voice Volume, Ambient Volume, UI Volume).
  • Video settings (Full Screen, V-Sync, Resolution, Shadow Quality, Texture Quality, Graphics Quality).
  • Controls settings (Mouse Turn Speed, Invert Mouse, Gamepad Mode, etc.).
  • UI settings (Lock UI, window opacity sliders, action bars 1-7 toggles, unit frame toggles, etc.).
  • Key bindings categories (Movement, Action Bars, System).
• UI_en.asset: Added corresponding English strings formatted in standard Title Case.
• UI_zh-CN.asset: Added corresponding Simplified Chinese translations.

2. Prefab Event Bindings & Standardization

• MainSettingsMenuPanel.prefab:
  • Attached LocalizeStringEvent components to 71 static TextMeshProUGUI GameObjects across the 5 subpanels and dynamically bound them to TMP_Text.set_text.
  • Standardized the static m_text properties in the prefab to Title Case, matching UI_en.asset (including Effects Volume and Medium) for a polished and consistent appearance in both Editor and Play modes.

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Verification

• Automated Two-Way Validation: 78 / 78 (100%) mapped text targets in MainSettingsMenuPanel.prefab passed string table lookup and bidirectional match checks.