Change messages for subresources don’t show old values

[danielparks]

The old value in the change message actually shows the new values:

Notice: /Stage[main]/Main/Rustup[daniel]/Rustup_internal[daniel]/targets: targets changed [
  {
    'ensure' => 'present',
    'name' => 'default',
    'toolchain' => 'stable'
  },
  {
    'ensure' => 'present',
    'name' => 'default',
    'toolchain' => 'nightly'
  },
  {
    'ensure' => 'present',
    'name' => 'wasm32-unknown-unknown',
    'toolchain' => 'stable'
  },
  {
    'ensure' => 'present',
    'name' => 'wasm32-unknown-unknown',
    'toolchain' => 'nightly'
  },
  {
    'ensure' => 'absent',
    'name' => 'x86_64-apple-ios',
    'toolchain' => 'nightly'
  }] to [
  {
    'ensure' => 'present',
    'name' => 'default',
    'toolchain' => 'stable'
  },
  {
    'ensure' => 'present',
    'name' => 'default',
    'toolchain' => 'nightly'
  },
  {
    'ensure' => 'present',
    'name' => 'wasm32-unknown-unknown',
    'toolchain' => 'stable'
  },
  {
    'ensure' => 'present',
    'name' => 'wasm32-unknown-unknown',
    'toolchain' => 'nightly'
  },
  {
    'ensure' => 'absent',
    'name' => 'x86_64-apple-ios',
    'toolchain' => 'nightly'
  }]
Info: rustup_internal: as daniel: /Users/daniel/.cargo/bin/rustup toolchain list
Info: rustup_internal: as daniel: /Users/daniel/.cargo/bin/rustup target uninstall --toolchain nightly-x86_64-apple-darwin x86_64-apple-ios