style(host): rustfmt the bit_depth ternary in serve_session

Collapse the manually-wrapped if/else to rustfmt's canonical form; fixes
the cargo fmt --all --check CI failure at punktfunk1.rs:895.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/punktfunk-host/src/punktfunk1.rs

@@ -895,14 +895,12 @@ async fn serve_session(
         // stance as the GameStream Main10 advertisement).
         let host_wants_10bit = crate::config::config().ten_bit;
         let client_supports_10bit = hello.video_caps & punktfunk_core::quic::VIDEO_CAP_10BIT != 0;
-        let bit_depth: u8 = if host_wants_10bit
+        let bit_depth: u8 =
-            && client_supports_10bit
+            if host_wants_10bit && client_supports_10bit && codec == crate::encode::Codec::H265 {
-            && codec == crate::encode::Codec::H265
+                10
-        {
+            } else {
-            10
+                8
-        } else {
+            };
-            8
-        };
         tracing::info!(
             bit_depth,
             host_wants_10bit,