fix(mm): show Anima Qwen3 0.6B encoders in Model Manager list (#9173)

The Model Manager qwen3_encoder category used isQwen3EncoderModelConfig
as its filter, which excludes variant=qwen3_06b (reserved for the Anima
picker). Anima Qwen3 0.6B encoders were therefore installed but
invisible in the Model Manager UI. Broaden the category filter to also
include isAnimaQwen3EncoderModelConfig; picker selectors are unchanged.

Co-authored-by: Your Name <you@example.com>
Co-authored-by: Lincoln Stein <lincoln.stein@gmail.com>