For some reason `ReturnType<typeof useListImagesQuery>` isn't working correctly, and destructuring `queryResult` it results in `any`, when the hook is used.

I've removed the explicit return typing so that consumers of the hook get correct types.

This was needed when we didn't support SDXL on canvas.

… base model

There's a challenge to accomplish this due to our slice structure - the model is stored in `generationSlice`, but `canvasSlice` also needs to have awareness of it. For example, when the model changes, the canvas slice doesn't know what the previous model was, so it doesn't know whether or not to optimize the size.

This means we need to lift the "should we optimize size" information up. To do this, the `modelChanged` action creator accepts the previous model as an optional second arg.

Now the canvas has access to both the previous model and new model selection, and can decide whether or not it should optimize its size setting in the same way that the generation slice does.

Closes  #5452

It was rounding dimensions when it shouldn't.

Closes #5453

I was troubleshooting a hotkeys issue on canvas and thought I had broken the tool logic in a past change so I redid it moving it to nanostores. In the end, the issue was an upstream but with the hotkeys library, but I like having tool in nanostores so I'm leaving it.

It's ephemeral interaction state anyways, doesn't need to be in redux.

closes #5448