chore(mssql): enable XACT_ABORT for all stored procedures used by Eventuous

Added SET XACT_ABORT ON to all SQL stored procedures invoked through
GetStoredProcCommand() to ensure atomic rollback behavior when the client
transaction encounters an error. This prevents partial commits and
inconsistent transactional states during event append and stream operations.

Related to issue #429

Author: nealmummau

src/SqlServer/src/Eventuous.SqlServer/Scripts/2_AppendEvents.sql

@@ -6,6 +6,7 @@ CREATE OR ALTER PROCEDURE __schema__.append_events
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     -- Note: This procedure is wrapped in a transaction by the caller. This explains why there is no explicit transaction here within the procedure.
 

src/SqlServer/src/Eventuous.SqlServer/Scripts/3_CheckStream.sql

@@ -6,6 +6,7 @@ CREATE OR ALTER PROCEDURE __schema__.check_stream
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     DECLARE @customErrorMessage NVARCHAR(200);
 

src/SqlServer/src/Eventuous.SqlServer/Scripts/4_ReadAllForwards.sql

@@ -4,6 +4,7 @@ CREATE OR ALTER PROCEDURE __schema__.read_all_forwards
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     SELECT TOP (@count)
         m.MessageId,

src/SqlServer/src/Eventuous.SqlServer/Scripts/5_ReadStreamBackwards.sql

@@ -5,6 +5,7 @@ CREATE OR ALTER PROCEDURE __schema__.read_stream_backwards
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     DECLARE
         @current_version INT,

src/SqlServer/src/Eventuous.SqlServer/Scripts/6_ReadStreamForwards.sql

@@ -5,6 +5,7 @@ CREATE OR ALTER PROCEDURE __schema__.read_stream_forwards
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     DECLARE
         @current_version INT,

src/SqlServer/src/Eventuous.SqlServer/Scripts/7_ReadStreamSub.sql

@@ -6,6 +6,7 @@ CREATE OR ALTER PROCEDURE __schema__.read_stream_sub
     AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     SELECT TOP (@count)
         MessageId,

src/SqlServer/src/Eventuous.SqlServer/Scripts/8_TruncateStream.sql

@@ -5,6 +5,7 @@ CREATE OR ALTER PROCEDURE __schema__.truncate_stream
 AS
 BEGIN
     SET NOCOUNT ON;
+    SET XACT_ABORT ON;
 
     DECLARE
         @current_version INT,