gfx950: disable AITER MoE for openai/gpt-oss models #135

Job	Run time
Discover skills	9s
Validate plugin manifests	10s
Validate skill (rocm-doctor)	9s
Validate skill (local-ai-app-integration)	10s
Validate skill (serving-llms-on-instinct)	5s
Validate skill (magpie)	6s
Validate skill (apu-memory-tuner)	10s
Validate skill (local-ai-use)	6s
Validate skills and plugin manifests	3s
	1m 8s

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