App execute wrong command when default command is set.

[smalnote]

My urfave/cli version is

( Put the version of urfave/cli that you are using here )

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
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Dependency Management

• My project is using go modules.

Describe the bug

A clear and concise description of what the bug is.

To reproduce

App executes wrong command when default command is set.

// in main.go file
var app = cli.App{
	Name:           "inspector",
	DefaultCommand: "inspect",
	Commands: []*cli.Command{
		{
			Name:  "inspect",
			Flags: []cli.Flag{
				&cli.StringFlag{
					Name:  "filename",
				},
			},
			Action: func(ctx *cli.Context) error {
				log.Print("inspect")
				return nil
			},
		},
		{
			Name:  "declare",
			Flags: []cli.Flag{
				&cli.StringSliceFlag{
					Name:     "filename",
				},
			},
			Action: func(ctx *cli.Context) error {
				log.Print("declare")
				return nil
			},
		},
	},
}

$go run ./main.go declare --filename=abc

Observed behavior

Run the default command inspect rather than the specified command declare.
$go run main.go declare --filename=abc
$2022/10/25 11:57:04 inspect

Expected behavior

Run the command declare.

What would you have expected to happen immediately after the
reproduction steps above?

Additional context

Add any other context about the problem here.

If the issue relates to a specific open source GitHub repo, please
link that repo here.

If you can reproduce this issue with a public CI system, please
link a failing build here.

Want to fix this yourself?

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this bug is easily explained and very small, feel free to create a
pull request for it.

Run go version and paste its output here

go version go1.19.1 linux/amd64

Run go env and paste its output here

# paste `go env` output in here