How to reproduce:
1. Create a new Unity project and import the "MySimpleGraph" Script and "New Graph 1" Graph
2. When the scripts are compiled, import the "Graph" script
3. When the scripts are compiled, observe the Console

Expected results: There is "Use the different extension" error that can't be cleared because the compilation error prevents "MySimpleGraph" from being opened
Actual results: There is a clearable error that doesn't appear again unless the scripts are recompiled

Reproducible with: 6000.4.0b7, 6000.5.0a6

Reproducible on: macOS Tahoe 26 (M1)
Not reproducible on: No other environment tested

Note: Due to the error being clearable, it might seem that it is not important, while the conflict in scripts actually makes the Graph created with the first Script unusable