Support loading Qwen3 MoE GGUF

[ctcanbol]

Feature request

Currently, GGUF versions of Qwen3 MoE models raises "GGUF model with architecture qwen3moe is not supported yet" error.

Motivation

Qwen3 GGUF models with MoE will successfully run.

Your contribution

This PR resolves this issue: #39638

[ctcanbol]

Fixed with #39638