Simplify Named RAI name conversion

[gselzer]

When you use ij.py.from_java, you open the door to unwanted conversion behavior. As an example, if jobj is linked to an ImagePlus, the conversion of the name can utilize imagej-legacy's StringToImagePlusConverter, making the resulting xarray.name an ndarray.

This was the source of imagej/napari-imagej#304

@elevans can you think of any worthwhile tests to add here?

[elevans]

I wrote minimal example to test this in imagej/napari-imagej#304. We just need to show the image before trying to convert it with ij.py.from_java(). I pulled your branch and your fix works nicely 👍 .

[elevans]

I haven't really decided on a good test for this and I'm hesitant to add in something like xvfb into our CI jobs. Its an extra layer of complexity for a single test case (and no one has complained about this bug yet). What do you think about just testing to see the xarr.name attribute's type after conversion? It should always be str.

[gselzer]

and no one has complained about this bug yet

So what am I, chopped liver?

What do you think about just testing to see the xarr.name attribute's type after conversion? It should always be str.

Sounds good!

[elevans]

Doh! Yeah I take that back! Haha the ☕ is still getting into my system.

[gselzer]

I'll add the test momentarily