fix(dev-shell): no promiscuous DISPLAY forwarding #1012

Job	Run time
docker-buildx (auth-proxy, imags/git-auth-proxy/Dockerfile, imags/git-auth-proxy, localhost/l7/au...	1m 24s
test-e2e-podman (curl, 24.04)	5m 37s
docker-buildx (container-socket-proxy, imags/container-socket-proxy, imags/container-socket-proxy...	49s
test-compose (test_compose_run, ubuntu-24.04)	5m 13s
test-e2e-podman (ghauth, 24.04)	4m 45s
test-make (acng, podman, ubuntu-24.04)	48s
docker-buildx (dnsmasq, imags/dnsmasq/Containerfile, imags/dnsmasq, localhost/l7/dnsmasq:latest)	28s
test-e2e-podman (node_corepack, 24.04)	4m 58s
test-make (auth_proxy, podman, ubuntu-24.04)	59s
docker-buildx (gpg-vault, imags/gpg-vault-pk/Containerfile, ., localhost/l7/gpg-vault:latest)	47s
test-e2e-podman (lsp_typescript, 24.04)	6m 16s
test-make-all (podman, ubuntu-24.04)	4m 48s
test-make (container_proxy, podman, ubuntu-24.04)	39s
docker-buildx (node, imags/node-runner/Containerfile, ., localhost/l7/node:latest localhost/l7/no...	4m 15s
test-e2e-podman (node_majors, 24.04)	7m 10s
docker-buildx (nvim, imags/nvim/Containerfile, ., localhost/l7/nvim:latest localhost/l7/dev-shell...	2m 39s
test-make (caddy, podman, ubuntu-24.04)	1m 43s
test-make (dnsmasq, podman, ubuntu-24.04)	38s
test-make (gpg_pk, podman, ubuntu-24.04)	31s
test-make (nvim, podman, ubuntu-24.04)	6m 9s
test-make (runner_node, podman, ubuntu-24.04)	2m 39s
	1h 3m 15s

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