CI style-drift error message shows incomplete cleanupcode command

[tig]

Problem

When CI detects style drift, the error message tells contributors:

Run 'dotnet jb cleanupcode Terminal.Gui.Editor.slnx --profile="TG.Editor Full Cleanup"' locally and commit the result.

This is incomplete - it omits the critical --exclude and --no-build flags that CI itself uses. A contributor who follows this advice verbatim will:

1. Get build errors due to missing #nullable and related warnings
2. See 55+ files changed because the forked AvaloniaEdit files (Document/, Utils/, Search/) get reformatted

The actual CI command is:

dotnet jb cleanupcode Terminal.Gui.Editor.slnx \
  --profile="TG.Editor Full Cleanup" \
  --no-build \
  --exclude="third_party/**/*;src/Terminal.Gui.Editor/Document/**/*;src/Terminal.Gui.Editor/Utils/**/*;src/Terminal.Gui.Editor/Search/**/*"

Suggested fix

Update the echo in .github/workflows/ci.yml (or wherever the style-drift check lives) to print the full command including --no-build and --exclude flags, so contributors can copy-paste it directly.

Alternatively, add a scripts/cleanupcode.sh (or .ps1) wrapper that encapsulates the correct invocation and reference that in both CI and the error message.

Context

Reported by @BDisp in PR #195.