Usage does not auto indent newlines

[WestleyK]

my urfave/cli version is

v2.3.0

Checklist

• Are you running the latest v2 release? The list of releases is here.
• Did you check the manual for your release? The v2 manual is here
• Did you perform a search about this problem? Here's the Github guide about searching.

Dependency Management

• My project is using go modules.
• My project is using vendoring.
• My project is automatically downloading the latest version.
• I am unsure of what my dependency management setup is.

Describe the bug

Usage does not auto indent newlines in usage.

Expected output:

$ ./foo 
NAME:
   foo - sample usage

USAGE:
   foo [global options] command [command options] [arguments...]

COMMANDS:
   run  this is a long help output for the run command, long usage
        output, long usage output, long usage output, long usage output  <-- notice the indent
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h  show help (default: false)

Actual output:

$ ./foo 
NAME:
   foo - sample usage

USAGE:
   foo [global options] command [command options] [arguments...]

COMMANDS:
   run  this is a long help output for the run command, long usage
output, long usage output, long usage output, long usage output  <-- not auto indenting
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h  show help (default: false)

To reproduce

Example

package main

import (
	"fmt"
	"os"

	"github.com/urfave/cli/v2"
)

func main() {
	app := &cli.App{
		Usage: "sample usage",
		Commands: []*cli.Command{
			{
				Name:  "run",
				Usage: "this is a long help output for the run command, long usage\noutput, long usage output, long usage output, long usage output",
				Action: func(c *cli.Context) error {
					return fmt.Errorf("nothing")
				},
			},
		},
	}

	err := app.Run(os.Args)
	if err != nil {
		fmt.Fprintf(os.Stdout, "%s: %s\n", os.Args[0], err)
		os.Exit(1)
	}
}

Additional context

Related to: #1278

Run go version and paste its output here

go version go1.16.5 linux/amd64

Run go env and paste its output here

not relevant 

[dearchap]

@WestleyK I have a new PR #1460 which fixes this. Can you test and see ?

[dearchap]

PR #1460 fixes this.