fix aggalyer image reference and tool check tweak

[rebelArtists]

Description

fix aggalyer image reference, as the existing image tag appears replaced/deleted: https://github.com/agglayer/agglayer/pkgs/container/agglayer-rs

also includes:

• tool check readability fix

current error: There was an error validating Starlark code Error while validating final environment of script Caused by: Failed fetching the required image 'ghcr.io/agglayer/agglayer-rs:0.1.0'. Caused by: An error occurred pulling image 'ghcr.io/agglayer/agglayer-rs:0.1.0' --- at /home/circleci/project/container-engine-lib/lib/backend_impls/metrics_reporting/metrics_reporting_kurtosis_backend.go:38 (MetricsReportingKurtosisBackend.FetchImage) --- Caused by: An error occurred fetching image 'ghcr.io/agglayer/agglayer-rs:0.1.0' --- at /home/circleci/project/container-engine-lib/lib/backend_impls/docker/docker_manager/docker_manager.go:1310 (DockerManager.FetchImage) --- Caused by: Failed to pull Docker image 'ghcr.io/agglayer/agglayer-rs:0.1.0' from remote image repository. --- at /home/circleci/project/container-engine-lib/lib/backend_impls/docker/docker_manager/docker_manager.go:1288 (DockerManager.FetchLatestImage) --- Caused by: Tried pulling image 'ghcr.io/agglayer/agglayer-rs:0.1.0' but failed