Make hashes between up and configure consistent

[mattwalo32]

What I did
Currently, when docker compose config --hash [service] computes a hash for the service, it deletes all other services before computing the hash. That means if a service depends on another service, the DependsOn field gets deleted, causing the hash to be different than when docker up creates the labels.

I prevented the dependencies from getting deleted before hash computation to fix this.

I also noticed that docker up does some modification to the platform of the image before doing the hash (I.e. if no platform was specified in the yaml file, the default one is set). docker config doesn't do this at all. So I modified docker config to apply these modifications before computing the hash.

It could be argued that config shouldn't call applyPlatform. Take the scenario where a compose file contains services that don't have a platform specified. If that same file is run on two different machines with different default platforms, the hashes will be different. Personally, I think the hashes for the identical files should be different because they'll run on different platforms, but would love to get some feedback on that.

Related issue
Fixes #10907

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