Enable analyzer FormatEmptyBlock by default and change default severity to Hidden (RCS1023).

Author: josefpihrt

src/Analyzers/Analyzers.xml

@@ -465,8 +465,8 @@ protected internal class Foo
     <Title>Format empty block.</Title>
     <MessageFormat>Format empty block.</MessageFormat>
     <Category>Formatting</Category>
-    <DefaultSeverity>Info</DefaultSeverity>
-    <IsEnabledByDefault>false</IsEnabledByDefault>
+    <DefaultSeverity>Hidden</DefaultSeverity>
+    <IsEnabledByDefault>true</IsEnabledByDefault>
     <SupportsFadeOut>false</SupportsFadeOut>
     <SupportsFadeOutAnalyzer>false</SupportsFadeOutAnalyzer>
     <Samples>

src/Analyzers/CSharp/DiagnosticDescriptors.Generated.cs

@@ -269,8 +269,8 @@ public static partial class DiagnosticDescriptors
             title:              "Format empty block.", 
             messageFormat:      "Format empty block.", 
             category:           DiagnosticCategories.Formatting, 
-            defaultSeverity:    DiagnosticSeverity.Info, 
-            isEnabledByDefault: false, 
+            defaultSeverity:    DiagnosticSeverity.Hidden, 
+            isEnabledByDefault: true, 
             description:        null, 
             helpLinkUri:        $"{HelpLinkUriRoot}{DiagnosticIdentifiers.FormatEmptyBlock}", 
             customTags:         Array.Empty<string>());