Give back the connection name a test's in-process command line set (issue 1945)

runLine runs the controller's dispatch in the test process, which names every later connection after the line's verb:
the proposals tests left "mesh-controller verb settings", and the conditions verb's test later in the same process
read that name instead of its own.

cmd/mesh-controller/terminal_settings_test.go

@@ -9,6 +9,8 @@ import (
 	"testing"
 
 	"git.novox.be/novox/mesh-sdk/go/catalogue"
+
+	"github.com/novox/mesh-controller/internal/broker"
 )
 
 // Where root creates and owns a module's directories, and which of the machine's paths reach its container,
@@ -39,8 +41,10 @@ func atTheTerminal(t *testing.T, argv ...string) error {
 
 func runLine(t *testing.T, argv []string) error {
 	t.Helper()
-	before := os.Args
-	defer func() { os.Args = before }()
+	before, named := os.Args, broker.ConnectionName
+	// run names every connection this process dials after the line's verb; a later test in this process would dial as
+	// that verb (issue 1945: a conditions test saw "mesh-controller verb settings").
+	defer func() { os.Args, broker.ConnectionName = before, named }()
 	os.Args = append([]string{"mesh-controller"}, argv...)
 	return run()
 }