fix: racecondition return on install_crypto fn

crates/precompile/src/interface.rs

@@ -11,12 +11,7 @@ static CRYPTO: OnceLock<Box<dyn Crypto>> = OnceLock::new();
 
 /// Install a custom crypto provider globally.
 pub fn install_crypto<C: Crypto + 'static>(crypto: C) -> bool {
-    if CRYPTO.get().is_some() {
-        return false;
-    }
-
-    CRYPTO.get_or_init(|| Box::new(crypto));
-    true
+    CRYPTO.set(Box::new(crypto)).is_ok()
 }
 
 /// Get the installed crypto provider, or the default if none is installed.

crates/primitives/src/once_lock.rs

@@ -41,6 +41,12 @@ mod no_std_impl {
         pub fn get(&self) -> Option<&T> {
             self.inner.get()
         }
+
+        /// Sets the contents of the OnceLock.
+        #[inline]
+        pub fn set(&self, value: T) -> Result<(), T> {
+            self.inner.set(Box::new(value)).map_err(|e| *e)
+        }
     }
 }