Re-export IntoDynamicImageError as public (#13223)

# Objective

in response to [13222](#13222)

## Solution

The Image trait was already re-exported in bevy_render/src/lib.rs, So I
added it inline there.

## Testing

Confirmed that it does compile. Simple change, shouldn't cause any
bugs/regressions.

crates/bevy_render/src/lib.rs

@@ -46,7 +46,7 @@ pub mod prelude {
         mesh::{morph::MorphWeights, primitives::Meshable, Mesh},
         render_resource::Shader,
         spatial_bundle::SpatialBundle,
-        texture::{Image, ImagePlugin},
+        texture::{image_texture_conversion::IntoDynamicImageError, Image, ImagePlugin},
         view::{InheritedVisibility, Msaa, ViewVisibility, Visibility, VisibilityBundle},
         ExtractSchedule,
     };