fix(web): use compatibility renderer

Chromium can advertise WebGPU limits that its shader path does not reliably support. Keep web builds on the packed/texture pipelines.\n\nRefs #788

src/scene/pipeline/device_capabilities.rs

@@ -2,9 +2,7 @@ use iced::wgpu;
 
 /// Renderer-relevant limits of the selected GPU device.
 ///
-/// Capabilities, not the compilation target, choose the renderer tier. Browser
-/// WebGPU and native Vulkan/Metal/DX12 can therefore share storage-backed
-/// pipelines, while WebGL2 and weak native adapters use compatibility paths.
+/// Native devices select by limits; browser builds use compatibility paths.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct DeviceCapabilities {
     pub max_storage_buffers_per_shader_stage: u32,