style: clear remaining clippy warnings

- params.rs: collapse `if cfg!(wasm) { false } else { true }` for
  star_aa into `!cfg!(wasm)` (clippy::needless_bool).
- render/plugin.rs: `resize_offscreen` is a Bevy system whose argument
  count is fixed by its SystemParam set; allow clippy::too_many_arguments
  alongside the existing type_complexity allow on the same function.

src/params.rs

@@ -145,7 +145,7 @@ impl Default for BlackHoleParams {
             skybox_intensity: 0.0, // procedural stars only by default
             planet_count: 0,
             spin: 0.0,
-            star_aa: if cfg!(target_arch = "wasm32") { false } else { true },
+            star_aa: !cfg!(target_arch = "wasm32"),
             bloom_threshold: 1.0,
             bloom_strength: 0.8,
             exposure: 1.0,

src/render/plugin.rs

@@ -419,7 +419,7 @@ fn spawn_bloom_pipeline(
 
 /// Recreate the offscreen Image and rescale both quads on window resize,
 /// honoring the live `render_scale` param.
-#[allow(clippy::type_complexity)]
+#[allow(clippy::type_complexity, clippy::too_many_arguments)]
 fn resize_offscreen(
     mut images: ResMut<Assets<Image>>,
     params: Res<crate::params::BlackHoleParams>,