[mono] Preserve FirstChanceExceptionEventArgs ctor (#68235)

The runtime is creating the exception so we need to preserve it.
See dotnet/android#6626

While looking at this I noticed that `FirstChanceExceptionEventArgs` is in ExceptionNotification.cs for some reason, fixed the filename to match the type name.

Use DynamicDependency for preserving `FirstChanceExceptionEventArgs` and `UnhandledExceptionEventArgs`

Author: akoeplinger

src/libraries/System.Private.CoreLib/src/System.Private.CoreLib.Shared.projitems

@@ -785,7 +785,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ConstrainedExecution\PrePrepareMethodAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ConstrainedExecution\ReliabilityContractAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ExceptionServices\ExceptionDispatchInfo.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ExceptionServices\ExceptionNotification.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ExceptionServices\FirstChanceExceptionEventArgs.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\ExceptionServices\HandleProcessCorruptedStateExceptionsAttribute.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\GCSettings.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)System\Runtime\InteropServices\AllowReversePInvokeCallsAttribute.cs" />

src/libraries/System.Private.CoreLib/src/System/AppContext.cs

@@ -3,6 +3,7 @@
 
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Diagnostics.CodeAnalysis;
 using System.Diagnostics.Tracing;
 using System.Reflection;
 using System.Runtime.ExceptionServices;
@@ -62,8 +63,10 @@ public static void SetData(string name!!, object? data)
         }
 
 #pragma warning disable CS0067 // events raised by the VM
+        [field: DynamicDependency(DynamicallyAccessedMemberTypes.PublicConstructors, typeof(UnhandledExceptionEventArgs))]
         public static event UnhandledExceptionEventHandler? UnhandledException;
 
+        [field: DynamicDependency(DynamicallyAccessedMemberTypes.PublicConstructors, typeof(FirstChanceExceptionEventArgs))]
         public static event EventHandler<FirstChanceExceptionEventArgs>? FirstChanceException;
 #pragma warning restore CS0067
 

…ceptionServices/ExceptionNotification.cs …ervices/FirstChanceExceptionEventArgs.cssrc/libraries/System.Private.CoreLib/src/System/Runtime/ExceptionServices/ExceptionNotification.cs renamed to src/libraries/System.Private.CoreLib/src/System/Runtime/ExceptionServices/FirstChanceExceptionEventArgs.cs src/libraries/System.Private.CoreLib/src/System/Runtime/ExceptionServices/ExceptionNotification.cs renamed to src/libraries/System.Private.CoreLib/src/System/Runtime/ExceptionServices/FirstChanceExceptionEventArgs.cs

@@ -412,11 +412,6 @@
 			<field name="_value"/>
 		</type>
 
-		<!-- object.c: create_unhandled_exception_eventargs (assert) -->
-		<type fullname="System.UnhandledExceptionEventArgs">
-			<method signature="System.Void .ctor(System.Object,System.Boolean)" />
-		</type>
-
 		<!-- class.c: make_generic_param_class -->
 		<type fullname="System.ValueType" preserve="nothing" />