Always sync a package during validation

Attribute	Type	Description	Package Types Applicable
alwaysSync	boolean	During validation, automatically includes this package when any other package in the same domain is impacted. Useful for config/settings packages that must stay synchronized with their domain.	unlocked org-dependent unlocked source data

To ensure a package is always included during validation when its domain is impacted, add alwaysSync as a property to your package descriptor:

{
  "packageDirectories": [
    {
      "path": "src/frameworks/framework-core",
      "package": "framework-core",
      "versionNumber": "1.0.0.NEXT"
    },
    {
      "path": "src/frameworks/framework-config",
      "package": "framework-config",
      "versionNumber": "1.0.0.NEXT",
      "alwaysSync": true
    }
  ]
}

When framework-core is changed and validation is triggered, framework-config will automatically be included because it belongs to the same domain and has alwaysSync: true.

This also works across domains when using dependencyOn in release configs. If Domain B has a dependencyOn referencing a package from Domain A, and that package changes, all alwaysSync packages in Domain A will be included.