Fix ContainerResource build failure

[DePasqualeOrg]

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update

The ContainerResource target uses OrderedDictionary (added in #1360) but doesn't declare a dependency on swift-collections in Package.swift, and the source files import the Collections umbrella module instead of OrderedCollections. This causes build failures when OrderedDictionary is used in public declarations, since the compiler requires the specific submodule to be imported in that context.

• Add swift-collections dependency to the ContainerResource target in Package.swift
• Change import Collections to import OrderedCollections in ApplicationError.swift and ResourceLabels.swift

Testing

• Tested locally
• Added/updated tests
• Added/updated docs

[katiewasnothere]

lgtm thank you!