Include property aliases in compatible composition check

[madsrasmussen]

This PR resolves the compatibility check when composing content types. Currently, we passed a hardcoded array for the property aliases; this PR corrects it so we send the actual property aliases.

[Copilot]

Pull Request Overview

This PR addresses the compatibility check in content type composition by replacing a hardcoded property alias array with a dynamic lookup.

• Replaces hardcoded property aliases with dynamically fetched ones.
• Updates the composition picker modal to account for compositions used in both inheritance and composition.
• Adds a new method to retrieve property aliases in the content type structure manager.

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
src/Umbraco.Web.UI.Client/src/packages/content/content-type/workspace/views/design/content-type-design-editor.element.ts	Updates composition selection and includes dynamically retrieved property aliases.
src/Umbraco.Web.UI.Client/src/packages/content/content-type/structure/content-type-structure-manager.class.ts	Adds a new method to fetch all property aliases for content types.
src/Umbraco.Web.UI.Client/src/packages/content/content-type/modals/composition-picker/composition-picker-modal.token.ts	Extends the modal token interface to include a composition usage array.
src/Umbraco.Web.UI.Client/src/packages/content/content-type/modals/composition-picker/composition-picker-modal.element.ts	Adds a new state property and adjusts the disabled condition for compositions in the modal.

Comments suppressed due to low confidence (1)

src/Umbraco.Web.UI.Client/src/packages/content/content-type/workspace/views/design/content-type-design-editor.element.ts:393

• [nitpick] The variable name 'currentOwnerCompositionCompositionUniques' is overly verbose and contains redundant wording. Consider renaming it to 'currentOwnerCompositionUniques' for clarity.

const currentOwnerCompositionCompositionUniques = currentOwnerCompositionCompositions.map((composition) => composition.contentType.unique);