docker_compose_v2: check mode does build images

[felixfontein]

SUMMARY

While looking at #1090 I noticed that docker compose up --dry-run builds the images, and thus modifies the system's state. (The same might be true for pulling images.)

ISSUE TYPE

• Bug Report

COMPONENT NAME

docker_compose_v2

[felixfontein]

This seems to be a Compose bug that's fixed in docker/compose#13042.