[BUG] PR #27249 breaks build (Visual Code, Windows)

[vovodroid]

Did you test the latest bugfix-2.1.x code?

Yes, and the problem still exists.

Bug Description

PR #27249 breaks build (Visual Code, Windows)

PS C:\DISK_D\3D\Marlin> platformio run -e mega1280
Processing mega1280 (board: megaatmega1280; platform: atmelavr@~4.0.1; framework: arduino)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
UnicodeDecodeError: 'charmap' codec can't decode byte 0x90 in position 96864: character maps to <undefined>:
  File "C:\Users\QQQ\.platformio\penv\Lib\site-packages\platformio\builder\main.py", line 167:
    env.SConscript(env.GetExtraScripts("pre"), exports="env")
  File "C:\Users\QQQ\.platformio\packages\tool-scons\scons-local-4.7.0\SCons\Script\SConscript.py", line 612:
    return _SConscript(self.fs, *files, **subst_kw)
  File "C:\Users\QQQ\.platformio\packages\tool-scons\scons-local-4.7.0\SCons\Script\SConscript.py", line 279:
    exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
  File "C:\DISK_D\3D\Marlin\buildroot\share\PlatformIO\scripts\preflight-checks.py", line 161:
    sanity_check_target()
  File "C:\DISK_D\3D\Marlin\buildroot\share\PlatformIO\scripts\preflight-checks.py", line 151:
    text = file.read()
  File "C:\Users\QQQ\.platformio\python3\Lib\encodings\cp1252.py", line 23:
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]

Bug Timeline

PR #27249

Expected behavior

No response

Actual behavior

No response

Steps to Reproduce

No response

Version of Marlin Firmware

Latest bugfix-2.1.x

Printer model

No response

Electronics

No response

LCD/Controller

No response

Other add-ons

No response

Bed Leveling

None

Your Slicer

None

Host Software

None

Don't forget to include

• A ZIP file containing your Configuration.h and Configuration_adv.h.

Additional information & file uploads

No response

[ellensp]

Please attach your configuration files.

[vovodroid]

Please attach your configuration files.

Just default in bugfix-2.1.x branch - https://github.com/MarlinFirmware/Marlin/tree/bugfix-2.1.x/Marlin

My own build fails as well.

[ellensp]

confirmed, oddly this doesn't happen on linux at all with same code and config, just windows...

[ellensp]

Fixed. 8b81aae

[ellensp]

If anyone's interested

it breaks on the Ð in Configuration_adv.h from the line
//#define TOUCH_UI_UTF8_SCANDINAVIAN // Æ Ð Ø Þ æ ð ø þ

[github-actions]

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