Add ancestor endpoints and remove explicit parent context (#15746)

* Remove explicit parent context in API outputs

* Add ancestor endpoints for document and data type (experimental for now)

* Add ancestor endpoints for doctypes, media, mediatypes, partial views, scripts, static files, stylesheets and templates

* Add unit tests for ancestor ID parsing

* Add ancestor endpoint for dictionary items

* Update OpenApi.json

* Fix merge and regenerate OpenApi.json

* Regenerate OpenApi.json

* Rename "folder" to "parent" for consistency

* Fix merge

* Fix merge

* Include "self" in ancestor endpoints

* Handle ancestors for root items correctly

* Remove "type" from recycle bin items

* Tests against fixed values instead of calculated ones.

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Co-authored-by: Sven Geusens <sge@umbraco.dk>

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Extensions/TreeEntityExtensionsTests.cs

@@ -0,0 +1,25 @@
+using Moq;
+using NUnit.Framework;
+using Umbraco.Cms.Core.Extensions;
+using Umbraco.Cms.Core.Models.Entities;
+using Range = System.Range;
+
+namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core.Extensions;
+
+[TestFixture]
+public class TreeEntityExtensionsTests
+{
+    [TestCase("-1,1234", new int[] { })]
+    [TestCase("-1,1234,5678", new int[] { 1234 })]
+    [TestCase("-1,1234,5678,9012", new int[] { 5678, 1234 })]
+    [TestCase("-1,1234,5678,9012,2345", new int[] { 9012, 5678, 1234 })]
+    public void Parse_Ancestor_Ids_Excludes_Root_And_Self(string path, int[] expectedIds)
+    {
+        var entityMock = new Mock<ITreeEntity>();
+        entityMock.SetupGet(m => m.Path).Returns(path);
+
+        var result = entityMock.Object.AncestorIds();
+        Assert.AreEqual(expectedIds.Length, result.Length);
+        Assert.That(expectedIds, Is.EquivalentTo(result));
+    }
+}