Fast double map change corrupt internal structure of shop data

[Kailo97]

Describe the bug
this bug requires testing and confirmation
Fast double map change corrupt internal structure of shop data.
Sourcemod error logs start to spam

L 07/26/2021 - 21:51:01: [SM] Exception reported: Invalid Handle c710bab (error: 1)
L 07/26/2021 - 21:51:01: [SM] Blaming: shop/shop.smx
L 07/26/2021 - 21:51:01: [SM] Call stack trace:
L 07/26/2021 - 21:51:01: [SM]   [0] ArrayList.FindValue
L 07/26/2021 - 21:51:01: [SM]   [1] Line 659, addons/sourcemod/scripting/shop/item_manager.sp::ItemManager_OnItemRegistered

I looked at action SM log and found that in time of error starts spam map was changed twice in 2-4 seconds.

L 07/26/2021 - 21:51:00: -------- Mapchange to de_mirage --------
L 07/26/2021 - 21:51:02: -------- Mapchange to de_mirage --------

Full logs with two exmples here: (12:02:10 and 21:51:00)
errors_20210726.log
L20210726.log

To Reproduce
Steps to reproduce the behavior:

1. Change map once
2. Change map again in next 2-4 seconds
3. See error

Expected behavior
No errors =)

Server (please complete the following information):

• OS Linux
• Sourcemod version 1.10.0.6502
• Version 3.0E2