Bugs with rendering of named types about zui HOT 1 OPEN

In the time since this issue was first opened, we've spotted some additional problems with the rendering of named types. The repro below is at Zui commit 67797fd and uses the following input data.zson:

{
    nest1: {
        foo: "bar"
    },
    nest2: {
        foo: "bar"
    } (=AnotherName),
    nest3: {
        foo: "bar"
    }
}

The attached video shows three problems related to the named type in this data:

1. There's no leading = shown in the type decorator for AnotherName like we see in the ZSON rendering from the CLI tooling. As the ZSON spec describes, the = is necessary when it's defined as a new type but then can be dropped in later references.
2. In the Columns picker, the nested field foo is not shown for the nested record that's a named type. This symptom was first reported to us by a community zync user.
3. The named type is described in the Columns picker as an <alias>, but this terminology has been purged from Zed in favor of "named type". In any case, for the purposes of what's shown in the Column picker, I imagine labeling it <record> is probably still appropriate, though it may be worth polling the Zed dev team for input as well.

from zui.