[Bug] 3.25.0-beta.3: curly component names are normalized differently

[dfreeman]

🐞 Describe the Bug

In [email protected] and prior, a component invoked in block form like {{#pkg::component-name}} would be looked up via the resolver as pkg::component-name.

Starting with beta.3 with the upgrade to [email protected], that name is normalized via customizeComponentName to become pkg/component-name. For a customized resolver where :: is a meaningful token, such components no longer resolve correctly.

🔬 Minimal Reproduction

The following is resolved as component:pkg::component-name in beta.2, but component:pkg/component-name in beta.3:

{{#pkg::component-name}}
  hello!
{{/pkg::component-name}}

Note that an inline invocation like {{pkg::component-name}} does not go through customizeComponentName and so still resolves as before.

😕 Actual Behavior

Block curly component names have :: normalized to /.

🤔 Expected Behavior

Block curly component names aren't subjected to the same normalization rules as angle-bracket components, as in prior releases.

🌍 Environment

• Ember: 3.25.0-beta.3

➕ Additional Context

Additional discussion of the details of this issue is at glimmerjs/glimmer-vm#1255

[rwjblue]

Fixed by #19363