firewall: Use aria labels on all buttons
firewall: Use aria labels on all buttons

Closes #13092

moraleslazaro/cockpit,martinpitt/cockpit,deryni/cockpit,mvollmer/cockpit,cockpituous/cockpit,garrett/cockpit,cockpituous/cockpit,martinpitt/cockpit,cockpituous/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,garrett/cockpit,cockpit-project/cockpit,deryni/cockpit,mvollmer/cockpit,deryni/cockpit,deryni/cockpit,cockpituous/cockpit,martinpitt/cockpit,mvollmer/cockpit,deryni/cockpit,cockpituous/cockpit,garrett/cockpit,garrett/cockpit,cockpit-project/cockpit,garrett/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,deryni/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,mvollmer/cockpit,deryni/cockpit,cockpit-project/cockpit