Bug with --gh-host flag for enterprise servers that end in "...github.com"

[danmurphy42]

github-mcp-server/pkg/utils/api.go

Lines 213 to 215 in bbc675a

	if strings.HasSuffix(u.Hostname(), "github.com") {
	return newDotcomHost()
	}

It's possible for a Github Enterprise server to end in github.com, i.e. mycompanygithub.com, so any requests will still forward to api.github.com even if that's not the right hostname.