Aliases don't work properly with TextUnmarshaler

[WGH-]

Given

type testStructAB_TextUnmarshaler struct {
	A simpleTextUnmarshaler
	B simpleTextUnmarshaler
}

YAML document

a: &foo hello world
b: *foo

returns an error cannot construct into yaml_test.simpleTextUnmarshaler (TextUnmarshaler), but it should be correctly decoded into

a:
    value: hello world
b:
    value: hello world

This is a problem as of current main (cc10f15) and v4.0.0-rc.4.

[ingydotnet]

@WGH- Fixed by #300?

Closing