[BUG] python global injection leads to error on first script run on any page

[um1642]

Describe the bug
When any Global Injection is defined in the Settings:

Running for the first time a run-python block in edit:preview or view mode:

• there will be an error message (see below)
• the code is executed with its correct result

Running any script after the first on the same note:

• there is no more error message
• the code is executed with its correct result

Error message in edit:view mode:

ImportError: No module named __main__

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "<frozen runpy>", line 191, in _run_module_as_main
  File "<frozen runpy>", line 243, in _get_main_module_details
runpy._Error: can't find '__main__' module in 'C:\\Users\\user\\AppData\\Local\\Obsidian'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<frozen runpy>", line 194, in _run_module_as_main
SystemExit: C:\Python313\python.exe: can't find '__main__' module in 'C:\\Users\\user\\AppData\\Local\\Obsidian'

Error message in view mode:

SystemExit: C:\Python313\python.exe: can't find '__main__' module in 'C:\\Users\\user\\AppData\\Local\\Obsidian'

Software Version
OS: WIN11
Plugin Version: 2.0.0
Obsidian Version: 1.8.4

To Reproduce
Steps to reproduce the behavior:

1. settings: persistent output: disabled, notebook mode: enabled
2. settings: global injection:
   def dummy(): pass
3. create an empty run-python bloc
4. run it once -> see there is an error
5. run it again -> see there is no more error

Expected behavior
there should be no error from at the first run

Screenshots
has no additional interest here

Additional context
none

[um1642]

I said "run-python" bloc but it is also applicable for "python" bloc