set option arg for contract method interface to MethodOptions

Author: Ryang-21

cmd/crates/soroban-spec-typescript/fixtures/test_constructor/src/index.ts

@@ -222,7 +222,7 @@ pub fn entry_to_method_type(entry: &Entry) -> String {
             format!(
                 r"
   {doc}
-  {name}: ({input}options?: AssembledTransactionOptions<{return_type}>) => Promise<AssembledTransaction<{return_type}>>
+  {name}: ({input}options?: MethodOptions) => Promise<AssembledTransaction<{return_type}>>
 "
             )
         }

cmd/crates/soroban-spec-typescript/fixtures/test_custom_types/src/index.ts

@@ -17,7 +17,6 @@ import type {
   i128,
   u256,
   i256,
-  AssembledTransactionOptions,
   Option,
   Typepoint,
   Duration,