Optimize for multi-module support in AOT mode (#3563)

- Split the `aot_loader_resolve_function` into two functions to prevent
  redundant module lookups and loads
- Access pre-associated module instances from `import_func_module_insts`,
  avoiding unnecessary instance lookups and improving performance

core/iwasm/aot/aot_runtime.h

@@ -109,6 +109,7 @@ typedef struct AOTModuleInstanceExtra {
 #if WASM_ENABLE_MULTI_MODULE != 0
     bh_list sub_module_inst_list_head;
     bh_list *sub_module_inst_list;
+    WASMModuleInstanceCommon **import_func_module_insts;
 #endif
 } AOTModuleInstanceExtra;