Fix obsolete (#7573)

Co-authored-by: Daniel Marbach <danielmarbach@users.noreply.github.com>

Author: danielmarbach

src/NServiceBus.Core.Tests/ApprovalFiles/APIApprovals.ApproveNServiceBus.approved.txt

@@ -1426,13 +1426,9 @@ namespace NServiceBus.Features
     {
         public static void EnableFeature<TFeature>(this NServiceBus.Settings.SettingsHolder settings)
             where TFeature : NServiceBus.Features.Feature, new () { }
-        [System.Obsolete("It is no longer possible to enable features by default on the settings. Features " +
-            "can enable other features by calling EnableByDefault<T> in the constructor. Will" +
-            " be removed in version 11.0.0.", true)]
+        [System.Obsolete(@"It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings. Will be removed in version 11.0.0.", true)]
         public static NServiceBus.Settings.SettingsHolder EnableFeatureByDefault(this NServiceBus.Settings.SettingsHolder settings, System.Type featureType) { }
-        [System.Obsolete("It is no longer possible to enable features by default on the settings. Features " +
-            "can enable other features by calling EnableByDefault<T> in the constructor. Will" +
-            " be removed in version 11.0.0.", true)]
+        [System.Obsolete(@"It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings. Will be removed in version 11.0.0.", true)]
         public static NServiceBus.Settings.SettingsHolder EnableFeatureByDefault<T>(this NServiceBus.Settings.SettingsHolder settings)
             where T : NServiceBus.Features.Feature { }
         [System.Obsolete("Use \'IsFeatureActive<T>(this IReadOnlySettings settings)\' instead. Will be remove" +

src/NServiceBus.Core/obsoletes-v10.cs

@@ -460,17 +460,17 @@ public class DataBus;
     public static partial class SettingsExtensions
     {
         [ObsoleteMetadata(
-            Message = "It is no longer possible to enable features by default on the settings. Features can enable other features by calling EnableByDefault<T> in the constructor",
+            Message = "It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings",
             RemoveInVersion = "11",
             TreatAsErrorFromVersion = "10")]
-        [Obsolete("It is no longer possible to enable features by default on the settings. Features can enable other features by calling EnableByDefault<T> in the constructor. Will be removed in version 11.0.0.", true)]
+        [Obsolete("It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings. Will be removed in version 11.0.0.", true)]
         public static SettingsHolder EnableFeatureByDefault<T>(this SettingsHolder settings) where T : Feature => throw new NotImplementedException();
 
         [ObsoleteMetadata(
-            Message = "It is no longer possible to enable features by default on the settings. Features can enable other features by calling EnableByDefault<T> in the constructor",
+            Message = "It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings",
             RemoveInVersion = "11",
             TreatAsErrorFromVersion = "10")]
-        [Obsolete("It is no longer possible to enable features by default on the settings. Features can enable other features by calling EnableByDefault<T> in the constructor. Will be removed in version 11.0.0.", true)]
+        [Obsolete("It is no longer possible to enable features by default on the settings. Features can enable other features by calling Enable<T> in the constructor. Enabling a feature outside the context of another feature can be done by calling EnableFeature<T> on the endpoint configuration or settings. Will be removed in version 11.0.0.", true)]
         public static SettingsHolder EnableFeatureByDefault(this SettingsHolder settings, Type featureType) => throw new NotImplementedException();
 
         [ObsoleteMetadata(