Error when using plug-in with non-UTF8-name

[helgoboss]

Reported by Tobias:

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REAPER version: 6.58/x64
Module name: ReaLearn
Module version: v2.13.0-pre.4/x86_64 rev c31d4f (2022-05-12
14:41:00 UTC)
Module base address: 0x7ffdc40a0000
Module size: 0x1430000

Message: REAPER string should be UTF-8 encoded: Utf8Error { valid_up_to:
37, error_len: Some(1) }

0:     0x7ffdc4e63735 - cpp_to_rust_ProjectStateContext_SetTempFlag
1:     0x7ffdc4e6152c - cpp_to_rust_ProjectStateContext_SetTempFlag
2:     0x7ffdc4d20b48 - MAIN
3:     0x7ffdc4e85616 - cpp_to_rust_ProjectStateContext_SetTempFlag
4:     0x7ffdc4e8541b - cpp_to_rust_ProjectStateContext_SetTempFlag
5:     0x7ffdc4e82c37 - cpp_to_rust_ProjectStateContext_SetTempFlag
6:     0x7ffdc4e85119 - cpp_to_rust_ProjectStateContext_SetTempFlag
7:     0x7ffdc4f5ed60 - rust_eh_personality
8:     0x7ffdc4f5ee73 - rust_eh_personality
9:     0x7ffdc4d98c9e - MAIN

10: 0x7ffdc42ed3b3 - NSEEL_HOSTSTUB_EnterMutex
11: 0x7ffdc439820d - NSEEL_HOSTSTUB_EnterMutex
12: 0x7ffdc48d159e - MAIN
13: 0x7ffdc42f52ca - NSEEL_HOSTSTUB_EnterMutex
14: 0x7ffdc42f5b92 - NSEEL_HOSTSTUB_EnterMutex
15: 0x7ffdc49029c3 - MAIN
16: 0x7ffdc462cd45 - DllMain
17: 0x7ffdc46243be - DllMain
18: 0x7ffdc462488a - DllMain
19: 0x7ffdc48003c8 - MAIN
20: 0x7ffdc47f8791 - MAIN
21: 0x7ffdc49675c3 - MAIN
22: 0x7ffdc4dc76df - MAIN
23: 0x7ffdc4dc8453 - cpp_to_rust_IReaperControlSurface_Run
24: 0x1402ed1b0 -
25: 0x1401e4110 -
26: 0x1401e2f54 -
27: 0x14044283c -
28: 0x7ffe01382920 - ScreenToClient
29: 0x7ffe013820c2 - ScreenToClient
30: 0x7ffe013c9eb9 - UnpackDDElParam
31: 0x7ffe0137e858 - CallWindowProcW
32: 0x7ffe0137e299 - DispatchMessageW
33: 0x14043bc25 -
34: 0x140971d81 -
35: 0x7ffdffb57034 - BaseThreadInitThunk
36: 0x7ffe01b42651 - RtlUserThreadStart
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