Tiny add_native_program bug fixes with cleanups (#14042) (#14057)

* Tiny add_native_program bug fixes with cleanups

* Fix typo

(cherry picked from commit 164b7895b3)

Co-authored-by: Ryo Onodera <ryoqun@gmail.com>

sdk/src/native_loader.rs

@@ -3,9 +3,9 @@ use crate::account::Account;
 crate::declare_id!("NativeLoader1111111111111111111111111111111");
 
 /// Create an executable account with the given shared object name.
-pub fn create_loadable_account(name: &str) -> Account {
+pub fn create_loadable_account(name: &str, lamports: u64) -> Account {
     Account {
-        lamports: 1,
+        lamports,
         owner: id(),
         data: name.as_bytes().to_vec(),
         executable: true,