Introduce Section Alias condition const (#19633)

* Refactor section conditions into subfolders

Split section condition logic into 'section-alias' and 'section-user-permission' subfolders, each with their own constants, manifests, and types. Updated imports and manifest aggregation to use the new structure for improved modularity and maintainability.

* use const

* fix build

* Refactor section alias condition to use constant

Replaces hardcoded 'Umb.Condition.SectionAlias' strings with the UMB_SECTION_ALIAS_CONDITION_ALIAS constant across all manifests and related files. This improves maintainability and consistency by centralizing the section alias condition reference.

src/Umbraco.Web.UI.Client/examples/collection/collection/card-view/index.ts

@@ -1 +0,0 @@
-export { UMB_LANGUAGE_TABLE_COLLECTION_VIEW_ALIAS } from './manifests.js';

src/Umbraco.Web.UI.Client/examples/collection/collection/table-view/index.ts

@@ -1 +0,0 @@
-export { UMB_LANGUAGE_TABLE_COLLECTION_VIEW_ALIAS } from './manifests.js';

src/Umbraco.Web.UI.Client/examples/validation-context/index.ts

@@ -1,4 +1,5 @@
 import type { ManifestDashboard } from '@umbraco-cms/backoffice/dashboard';
+import { UMB_SECTION_ALIAS_CONDITION_ALIAS } from '@umbraco-cms/backoffice/section';
 
 const dashboard: ManifestDashboard = {
 	type: 'dashboard',
@@ -12,7 +13,7 @@ const dashboard: ManifestDashboard = {
 	},
 	conditions: [
 		{
-			alias: 'Umb.Condition.SectionAlias',
+			alias: UMB_SECTION_ALIAS_CONDITION_ALIAS,
 			match: 'Umb.Section.Content',
 		},
 	],