Fix serialization of Boolean activity input (#4922)

* Improve InputJsonConverter handling and trimming suppression

A new switch case block has been added for better handling of different types of JsonValueKind in InputJsonConverter. Also, a suppression message for the IL2026 trimming warning has been included to prevent potential runtime issues caused by code trimming, although justifications for this suppression are still pending.

* Add UIHint to While activity's Condition input

The Condition input in the While activity in Elsa.Workflows.Core has been updated to also include a UIHint. This aims to improve user input by specifically defining it as a SingleLine type.

Author: sfmskywalker

src/modules/Elsa.Workflows.Core/Activities/While.cs

@@ -5,6 +5,7 @@
 using Elsa.Workflows.Behaviors;
 using Elsa.Workflows.Contracts;
 using Elsa.Workflows.Models;
+using Elsa.Workflows.UIHints;
 using JetBrains.Annotations;
 
 namespace Elsa.Workflows.Activities;
@@ -69,7 +70,7 @@ public While(Func<bool> condition, IActivity? body = default, [CallerFilePath] s
     /// <summary>
     /// The condition to evaluate.
     /// </summary>
-    [Input(AutoEvaluate = false)]
+    [Input(AutoEvaluate = false, UIHint = InputUIHints.SingleLine)]
     public Input<bool> Condition { get; set; } = new(false);
 
     /// <summary>

src/modules/Elsa.Workflows.Core/Serialization/Converters/InputJsonConverter.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 using Elsa.Expressions.Contracts;
@@ -24,6 +25,7 @@ public InputJsonConverter(IExpressionDescriptorRegistry expressionDescriptorRegi
     public override bool CanConvert(Type typeToConvert) => typeof(Input).IsAssignableFrom(typeToConvert);
 
     /// <inheritdoc />
+    [UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "<Pending>")]
     public override Input<T> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
         if (!JsonDocument.TryParseValue(ref reader, out var doc))
@@ -42,11 +44,17 @@ public override Input<T> Read(ref Utf8JsonReader reader, Type typeToConvert, Jso
             var memoryBlockReference = expressionDescriptor?.MemoryBlockReferenceFactory();
             var memoryBlockReferenceType = memoryBlockReference?.GetType();
             var expressionValueElement = expressionElement.TryGetProperty("value", out var expressionElementValueValue) ? expressionElementValueValue : default;
-            var expressionValue = expressionValueElement.ValueKind == JsonValueKind.String
-                ? expressionValueElement.GetString()
-                : expressionValueElement.ValueKind != JsonValueKind.Undefined && memoryBlockReferenceType != null
-                    ? expressionValueElement.Deserialize(memoryBlockReferenceType, options)!
-                    : default;
+            
+            var expressionValue = expressionValueElement.ValueKind switch
+            {
+                JsonValueKind.String => expressionValueElement.GetString(),
+                JsonValueKind.False => false,
+                JsonValueKind.True => true,
+                JsonValueKind.Number => expressionValueElement.GetDouble(),
+                JsonValueKind.Undefined => default,
+                _ => memoryBlockReferenceType != null ? expressionValueElement.Deserialize(memoryBlockReferenceType, options)! : default
+            };
+                
             var expression = new Expression(expressionTypeName, expressionValue);
 
             if (memoryBlockReference == null)