fix: avoid eager interpolation warnings

[seekskyworld]

Issue

• [BUG] False "variable is not set" warning when using the ${A:+} interpolation syntax #12637

Summary

• drop the compose-local interpolation workaround
• use compose-go fix from fix: avoid eager default interpolation compose-spec/compose-go#847 via replace

Motivation

• keep compose file loading/processing in compose-go per maintainer guidance

Validation

• go test ./... (fails locally: Windows path expectations + missing Docker config at temp HOME)

[ndeloof]

compose file loading and processing should be implemented in compose-go

[seekskyworld]

@ndeloof Updated the PR to align with your guidance: removed the compose-local workaround and now rely on the compose-go fix (compose-spec/compose-go#847) via a temporary go.mod replace. Once the compose-go PR lands, I can switch this to a clean version bump. Tests: go test ./... .