Turn off C# auto-compile on topmost folder
Turn off C# auto-compile on topmost folder

If the C# extension is installed, then it reports 25k+ errors on the C# extractor until it is properly built. This is pure noise because the solution would be opened and built from the correct subdirectory. This commit disables the C# compilation altogether.

github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql