Fix atomic.wait, get wasi_ctx exit code and thread mgr issues (#2024)

- Remove notify_stale_threads_on_exception and change atomic.wait
  to be interruptible by keep waiting and checking every one second,
  like the implementation of poll_oneoff in libc-wasi
- Wait all other threads exit and then get wasi exit_code to avoid
  getting invalid value
- Inherit suspend_flags of parent thread while creating new thread to
  avoid terminated flag isn't set for new thread
- Fix wasi-threads test case update_shared_data_and_alloc_heap
- Add "Lib wasi-threads enabled" prompt for cmake
- Fix aot get exception, use aot_copy_exception instead

core/iwasm/aot/aot_runtime.h

@@ -415,6 +415,15 @@ aot_set_exception_with_id(AOTModuleInstance *module_inst, uint32 id);
 const char *
 aot_get_exception(AOTModuleInstance *module_inst);
 
+/**
+ * @brief Copy exception in buffer passed as parameter. Thread-safe version of
+ * `aot_get_exception()`
+ * @note Buffer size must be no smaller than EXCEPTION_BUF_LEN
+ * @return true if exception found, false otherwise
+ */
+bool
+aot_copy_exception(AOTModuleInstance *module_inst, char *exception_buf);
+
 uint32
 aot_module_malloc(AOTModuleInstance *module_inst, uint32 size,
                   void **p_native_addr);