chore(android): silence the two vendored-ndk warnings on every native build

The vendored ndk 0.9.0 warned twice per Android build: an unnecessary
`std::ptr::` qualification in input_queue.rs (the crate opts into
unused_qualifications) and an unused `Result` import in media_format.rs —
unused only because its sole consumers are #[cfg(feature = "api-level-29")]
methods our default-feature build compiles out, so the import is now gated
the same way (both feature configurations stay warning-free). Vendor-patch
inventory in the workspace Cargo.toml updated to stay honest.

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

Cargo.toml

@@ -26,7 +26,8 @@ exclude = [
     "clients/android/native/vendor/ndk",
 ]
 
-# ndk 0.9.0 verbatim from crates.io plus ONE visibility change: `MediaCodec::as_ptr` made public
+# ndk 0.9.0 verbatim from crates.io plus ONE visibility change (and two warning fixes — an
+# unnecessary `std::` qualification and a feature-gated `Result` import): `MediaCodec::as_ptr` made public
 # (upstream keeps it private and exposes no frame-rendered binding), so the Android client can
 # call `AMediaCodec_setOnFrameRenderedCallback` via ndk-sys for the HUD's `display` stage
 # (design/stats-unification.md). Drop the patch when upstream exposes the pointer or the callback.

clients/android/native/vendor/ndk/src/input_queue.rs

@@ -130,7 +130,7 @@ impl InputQueue {
                 looper.ptr().as_ptr(),
                 id,
                 None,
-                std::ptr::null_mut(),
+                ptr::null_mut(),
             )
         }
     }

clients/android/native/vendor/ndk/src/media/media_format.rs

@@ -9,7 +9,11 @@ use std::{
     slice,
 };
 
-use crate::media_error::{MediaError, Result};
+use crate::media_error::MediaError;
+// `Result` is only referenced by the api-level-29 methods below; an ungated import warns
+// (unused_imports) on every default-feature build.
+#[cfg(feature = "api-level-29")]
+use crate::media_error::Result;
 
 /// A native [`AMediaFormat *`]
 ///