[8.x] Remove expectedTables after converting to expectedOutput in PendingCommand

[SPie]

Using the newly added method expectsTable in Illuminate\Testing\PendingCommand leads to errors if other commands, without the expected table output, run after the command with the expected table output within the same test.
For example:

public function testCommandWithTableOutput()
{
    $this->artisan('command:table')
        ->expectsTable(['Header'], [['Value']])
        ->assertExitCode(0);

    $this->artisan('command:other')
        ->expectsOutput('Command Output')
        ->assertExitCode(0);
}

This leads to a failed test, because the table output of the first command is expected for the second command too.

The problem is, that for every command that runs in a test, the expected tables in the test get converted to expected output again.

I just removed the expected table after converting it so it will be used just once.