fix: wrong packet in protocol 11.00 (sendSaleItemList)

[kokekanon]

Description

to reproduce: login in protocol 11.00 OTC redemption /goto Xodet .
say hi trade when windows appears , error in console

ProtocolGame parse message exception (1709 bytes, 0 unread, last opcode is 0x00 (0), prev opcode is 0x7b (123), proto: 1100): unhandled opcode 0

test in 13.40 and 11.00 otclient redemption

Fixes

"Problem with the list of items in the NPC trade in the old protocol"
#2840

Type of change

• Bug fix (non-breaking change which fixes an issue)

Test Configuration:

• Server Version: canary last commits : fix: monsters and npcs spawns
• Client: OTC redemption 11.00
• Operating System: Windows 10+1

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I checked the PR checks reports
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works