[iOS/MacOs] Right-To-Left (RTL) alignment is not applied to Editor placeholder - fix

src/Controls/tests/TestCases.HostApp/Issues/Issue30052.cs

@@ -0,0 +1,33 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 30052, "Right-To-Left (RTL) alignment is not applied to Editor placeholder", PlatformAffected.iOS)]
+public class Issue30052 : TestContentPage
+{
+	protected override void Init()
+	{
+		Content = new VerticalStackLayout
+		{
+			FlowDirection = FlowDirection.RightToLeft,
+			Children =
+				{
+					new Editor
+					{
+						Placeholder = "This is a placeholder in an editor",
+						AutomationId = "Editor"
+					},
+					new Editor
+					{
+						Text = "Right to left - editor"
+					},
+					new Entry
+					{
+						Placeholder = "This is a placeholder in an entry"
+					},
+					new Entry
+					{
+						Text = "Right to left - entry"
+					}
+				}
+		};
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue30052.cs

@@ -0,0 +1,20 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue30052 : _IssuesUITest
+{
+	public Issue30052(TestDevice testDevice) : base(testDevice) { }
+
+	public override string Issue => "Right-To-Left (RTL) alignment is not applied to Editor placeholder";
+
+	[Test]
+	[Category(UITestCategories.Editor)]
+	public void RTLShouldBeAppliedToPlaceholers()
+	{
+		App.WaitForElement("Editor");
+		VerifyScreenshot();
+	}
+}

src/Core/src/Platform/iOS/MauiTextView.cs

@@ -146,7 +146,9 @@ void UpdatePlaceholderLabelFrame()
 				var height = Frame.Height - (TextContainerInset.Top + TextContainerInset.Bottom);
 
 				_placeholderLabel.Frame = new CGRect(x, y, width, height);
-			}
+				 _placeholderLabel.SemanticContentAttribute = SemanticContentAttribute;
+				 _placeholderLabel.TextAlignment = TextAlignment;
+			};
 		}
 
 		void HidePlaceholderIfTextIsPresent(string? value)