I have very basic table

CREATE TABLE [dbo].[Table_1](   [Test] [int] NULL)
INSERT INTO [dbo].[Table_1]([Test]) Select 1 

sp_configure'block process threshold', 1  --> 1 sec
go

To create blocking, in 1 session i executed

Begin tran
Update [dbo].[Table_1]
set [Test]=1

and another session

select * from [dbo].[Table_1]

when i setup extended events, i got below

<blocked-process-report monitorLoop="1670">
 <blocked-process>
  <process id="process1f18028c8"  .......>
   <executionStack>
    <frame line="1" stmtend="56" sqlhandle="0x02000000c7f1523220ed350bb649a019ae7dc2bca448a2000000000000000000000000000000000000000000" />
   </executionStack>
   <inputbuf>
select * from [dbo].[Table_1]
   </inputbuf>
  </process>
 </blocked-process>
 <blocking-process>
  <process status="sleeping" spid="59"....>
   <executionStack />
   <inputbuf>
**DECLARE @edition sysname; SET @edition = cast(SERVERPROPERTY(N'EDITION') as sysname); select case when @edition =
N'SQL Azure' then 2 else 1 end as 'DatabaseEngineType'****   </inputbuf>
  </process>
 </blocking-process>
</blocked-process-report>

From which sky <<< DECLARE @edition sysname; ... came while it should be Update statement....

Please help