fix(drivers): tighten local mount validation #2005

Job	Run time
Resolve PR metadata	6s
build-gateway / Resolve build plan	3s
build-supervisor / Resolve build plan	3s
build-supervisor / Rust sandbox (arm64) / sandbox (arm64)	3m 30s
build-supervisor / Rust sandbox (amd64) / sandbox (amd64)	3m 15s
build-gateway / Rust gateway (arm64) / gateway (arm64)	7m 7s
build-gateway / Rust gateway (amd64) / gateway (amd64)	6m 39s
build-supervisor / Build supervisor (arm64)	1m 24s
build-supervisor / Build supervisor (amd64)	1m 26s
build-supervisor / Merge supervisor manifest	1m 4s
build-gateway / Build gateway (amd64)	1m 22s
build-gateway / Build gateway (arm64)	1m 30s
gpu-e2e	-1s
GPU E2E result	-1s
build-gateway / Merge gateway manifest	1m 6s
kubernetes-e2e / Kubernetes E2E (Rust smoke)	9m 29s
e2e / E2E (rust-podman-rootless)	16m 6s
e2e / E2E (rust-podman)	14m 42s
e2e / E2E (python)	6m 48s
e2e / E2E (rust-docker)	7m 52s
kubernetes-ha-e2e	0s
Kubernetes HA E2E result	0s
Core E2E result	3s
	1h 23m 33s

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