daemon: handle EISDIR error from runtime

Go 1.20 made a change to the behaviour of package "os/exec" which was
not mentioned in the release notes:
golang/go@2b8f214
Attempts to execute a directory now return syscall.EISDIR instead of
syscall.EACCESS. Check for EISDIR errors from the runtime and set the
exit code appropriately.

Signed-off-by: Cory Snider <csnider@mirantis.com>

daemon/errors.go

@@ -155,7 +155,7 @@ func setExitCodeFromError(setExitCode func(exitStatus), err error) error {
 	}
 
 	// set to 126 for container cmd can't be invoked errors
-	if contains(errDesc, syscall.EACCES.Error()) {
+	if contains(errDesc, syscall.EACCES.Error()) || contains(errDesc, syscall.EISDIR.Error()) {
 		setExitCode(exitEaccess)
 		return startInvalidConfigError(errDesc)
 	}