Fix invalid locale keys in zh_CN/messages.json causing the error Name…

[omareltomy]

Fix invalid locale keys in zh_CN/messages.json

• Fix invalid key names that prevented extension from loading
• Changed keys to match correct names used in JavaScript code
• Fixes 'Could not load manifest' error due to invalid locale file

Fixed keys:

• 'Disable video playback on hover' -> 'disableThumbnailPlayback'
• 'Hide AI Summaries' -> 'hideAISummary'
• 'Hide Banner Ads (YouTube might deny)' -> 'hideBannerAds'
• 'Hide Pause Overlay' -> 'Hide_Pause_Overlay'
• 'Hide YouTube Logo' -> 'Hide_YouTube_Logo'
• 'Hide ⫶ (more actions) on thumbnails' -> 'hideThumbnailDots'
• 'Hide watched videos' -> 'hideWatchedVideos'
• 'Remove member only videos' -> 'removeMemberOnly'
• 'Thumbnail Size' -> 'thumbnailSize'
• 'Youtube-Search' -> 'Youtube_Search'
• 'Dim Youtube's pages, except what i mouse-over!' -> 'cursorLighting'

[Tibood]

Duplicate of #3110, but the latter is no longer up to date.

[ImprovedTube]

Welcome and thank you! @omareltomy @Tibood