[Android] Fix: Prevent duplicate Completed event when setting ReturnType in Entry (#28018)

* fix

* adding test

* set handled true for specific cases only

Author: bhavanesh2001

src/Controls/tests/TestCases.HostApp/Issues/Issue27992.xaml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+             x:Class="Controls.TestCases.HostApp.Issues.Issue27992"
+             Title="Issue27992">
+     <VerticalStackLayout Margin="10,30,10,0">
+              <Entry AutomationId="MauiEntry" Completed="Entry_Completed"
+                ReturnType="Search" />
+              <Label AutomationId="MauiLabel" x:Name="label" FontSize="30" TextColor="Black" />
+             </VerticalStackLayout>
+</ContentPage>

src/Controls/tests/TestCases.HostApp/Issues/Issue27992.xaml.cs

@@ -0,0 +1,16 @@
+namespace Controls.TestCases.HostApp.Issues;
+
+[Issue(IssueTracker.Github, 27992, "Entry Completed Event Triggered Twice", PlatformAffected.Android)]
+public partial class Issue27992 : ContentPage
+{
+	public Issue27992()
+	{
+		InitializeComponent();
+	}
+	int i =0;
+	private void Entry_Completed(object sender, EventArgs e)
+	{
+		i++;
+		label.Text = $"Completed Invoked {i} times";
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue27992.cs

@@ -0,0 +1,30 @@
+using System;
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Tests.Issues;
+
+public class Issue27992 : _IssuesUITest
+{
+	public Issue27992(TestDevice device) : base(device)
+	{
+	}
+
+	public override string Issue => "Entry Completed Event Triggered Twice";
+
+
+    [Test]
+	[Category(UITestCategories.Entry)]
+	public void EntryCompletedShouldOnlyFireOnce()
+	{
+		App.WaitForElement("MauiEntry");
+
+        App.Tap("MauiEntry");
+
+        App.PressEnter();
+
+        var text = App.WaitForElement("MauiLabel").GetText();
+        Assert.That(text,Is.EqualTo("Completed Invoked 1 times"));
+	}
+}

src/Core/src/Handlers/Entry/EntryHandler.Android.cs

@@ -223,6 +223,12 @@ void OnEditorAction(object? sender, EditorActionEventArgs e)
 				else if (evt?.KeyCode is null && (actionId == ImeAction.Done || actionId == currentInputImeFlag))
 				{
 					VirtualView?.Completed();
+					// In case of Search, Go, Send the EditorAction will be invoked for KeyEventActions which will cause Completed to inovke twice
+					//So for these setting handled to true
+					if (actionId == ImeAction.Search ||
+					 actionId == ImeAction.Go ||
+					  actionId == ImeAction.Send)
+						handled = true;
 				}
 			}