Follow-up "ZhConverter: Fix language variant fallback chain"
- Removed 'zh' from all variants to prevent unexpected conversion (e.g., Hant in zh-cn converted to Hani with -{H|zh:Hani; zh-hant:Hant;}- , which was referring to -{H|Hani=>zh-hant:Hant; Hani=>zh-tw:Hant; Hani=>zh-hk:Hant; Hani=>zh-mo:Hant;}- instead of -{H|zh-hans:Hani; zh-hant:Hant;}- )
Bug: T352554
Change-Id: I58db0f92e911dcce38beb2d9835681a8158328db