fix: restore getauxval_fix.c + current_thread tokio — both needed

The getauxval override (dlsym wrapper) fixes SIGSEGV in
init_have_lse_atomics at library load time. The current_thread
tokio runtime avoids SEGV_ACCERR in pthread_create/__init_tcb.
Both fixes are required together.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

crates/wzp-android/build.rs

@@ -4,6 +4,12 @@ fn main() {
     let target = std::env::var("TARGET").unwrap_or_default();
 
     if target.contains("android") {
+        // Override broken static getauxval from compiler-rt that crashes
+        // in shared libraries. Must be compiled first to take link priority.
+        cc::Build::new()
+            .file("cpp/getauxval_fix.c")
+            .compile("getauxval_fix");
+
         let oboe_dir = fetch_oboe();
         match oboe_dir {
             Some(oboe_path) => {