feat(ui): handle new image origin/category setup

- Update all thunks & network related things
- Update gallery

What I have not done yet is rename the gallery tabs and the relevant slices, but I believe the functionality is all there.

Also I fixed several bugs along the way but couldn't really commit them separately bc I was refactoring. Can't remember what they were, but related to the gallery image switching.

invokeai/frontend/web/src/common/components/ImageUploader.tsx

@@ -69,9 +69,8 @@ const ImageUploader = (props: ImageUploaderProps) => {
       dispatch(
         imageUploaded({
           formData: { file },
-          imageCategory: 'general',
+          imageCategory: 'user',
           isIntermediate: false,
-          showInGallery: false,
         })
       );
     },