dev_container: Respect runServices for Docker Compose

[YauhenVasileusky]

This PR fixes Docker Compose dev containers starting every service in the compose project, even when devcontainer.json specifies runServices.

Previously, Zed deserialized runServices but did not use it when invoking Docker Compose. The startup command was:

docker compose ... up -d

With no service operands, Compose starts every enabled service in the project. This means unrelated services are started even when the devcontainer config asks to run only the primary service and its dependencies.

The fix propagates runServices into the Docker Compose build/start path so Zed invokes Compose with the requested services:

docker compose ... up -d devcontainer

Compose will still start services required by depends_on, but unrelated services are left untouched.

Reproduction

.devcontainer/devcontainer.json:

{
  "name": "Run Services",
  "dockerComposeFile": "../compose.yml",
  "service": "devcontainer",
  "runServices": ["devcontainer"],
  "workspaceFolder": "/workspace"
}

compose.yml:

services:
  devcontainer:
    image: ubuntu:24.04
    command: sleep infinity
    volumes:
      - .:/workspace
    depends_on:
      - database

  database:
    image: postgres:16-alpine
    environment:
      POSTGRES_PASSWORD: postgres

  unrelated:
    image: nginx:alpine

Expected: Zed starts devcontainer and database.

Before this fix: Zed also starts unrelated.

After this fix: unrelated remains stopped.

Closes: #57279

Self-Review Checklist:

• I've reviewed my own diff for quality, security, and reliability
• Unsafe blocks (if any) have justifying comments
• The content is consistent with the UI/UX checklist
• Tests cover the new/changed behavior
• Performance impact has been considered and is acceptable

Release Notes:

• Fixed Docker Compose dev containers starting services not listed in runServices.

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[YauhenVasileusky]

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