record will not be replicated to other clusters with returning clause

[rockmenjack]

refer: https://sqlite.org/lang_returning.html

can be easily reproduced in master branch with below test case:
prerequisite: go-dqlite linked against sqlite3 >= v3.35.0

func TestDqliteBasic(t *testing.T) {
	var (
		file1 = "/db1"
		file2 = "/db2"
		file3 = "/db3"

		url1 = "127.0.0.1:2379"
		url2 = "127.0.0.1:2380"
		url3 = "127.0.0.1:2381"

		tempDir string
		err     error

		ctx = context.Background()

		failOnError = func(err error) {
			t.Helper()
			if err != nil {
				t.Fatal(err)
			}
		}
		
	)

	tempDir, err = ioutil.TempDir("", "dqlite-test-*")
	failOnError(err)
	defer func() {
		if t.Failed() {
			t.Logf("db data kept in %s =====\n", tempDir)
		} else {
			os.RemoveAll(tempDir)
		}
	}()

	err = os.MkdirAll(tempDir+file1, 0755)
	failOnError(err)

	err = os.MkdirAll(tempDir+file2, 0755)
	failOnError(err)

	err = os.MkdirAll(tempDir+file3, 0755)
	failOnError(err)

	app1, err := app.New(tempDir+file1, app.WithAddress(url1))
	failOnError(err)
	defer app1.Close()

	db1, err := app1.Open(ctx, "main")
	failOnError(err)


	app2, err := app.New(tempDir+file2, app.WithAddress(url2), app.WithCluster([]string{url2, url1}))
	failOnError(err)
	defer app2.Close()

	db2, err := app1.Open(ctx, "main")
	failOnError(err)


	app3, err := app.New(tempDir+file3, app.WithAddress(url3), app.WithCluster([]string{url2, url1, url3}))
	failOnError(err)
	defer app3.Close()

	db3, err := app1.Open(ctx, "main")
	failOnError(err)

	_, err = db1.Exec("CREATE TABLE my_table (n INT)")
	failOnError(err)

	var d2 int
	// row := db2.QueryRow("INSERT INTO my_table (n) VALUES (10)")   <--  everything works fine without RETURNING
	row := db2.QueryRow("INSERT INTO my_table (n) VALUES (10) RETURNING n")
	err = row.Scan(&d2)
	failOnError(err)
	t.Logf("got from db2: %d", d2)

	row = db3.QueryRow(`SELECT * FROM my_table`)
	var d3 int
	err = row.Scan(&d3)
	failOnError(err)

	t.Logf("got from db3: %d", d3)
}

[MathieuBordere]

Thank you for your report and the reproduction scenario, we'll investigate.

[MathieuBordere]

I'll track this in #192