Set .editorconfig dotnet_separate_import_directive_groups to its default value - false

Author: wdolek

template_feed/Microsoft.DotNet.Common.ItemTemplates/content/EditorConfig/Dotnet/.editorconfig

@@ -35,7 +35,7 @@ insert_final_newline = false
 [*.{cs,vb}]
 
 # Organize usings
-dotnet_separate_import_directive_groups = true
+dotnet_separate_import_directive_groups = false
 dotnet_sort_system_directives_first = true
 file_header_template = unset
 

test/dotnet-new.IntegrationTests/Approvals/AllCommonItemsCreate.-o#EditorConfig-file#-n#item.verified/EditorConfig-file/.editorconfig

@@ -35,7 +35,7 @@ insert_final_newline = false
 [*.{cs,vb}]
 
 # Organize usings
-dotnet_separate_import_directive_groups = true
+dotnet_separate_import_directive_groups = false
 dotnet_sort_system_directives_first = true
 file_header_template = unset