Implement async termination of blocking thread (#2516)

Send a signal whose handler is no-op to a blocking thread to wake up
the blocking syscall with either EINTR equivalent or partial success.

Unlike the approach taken in the `dev/interrupt_block_insn` branch (that is,
signal + longjmp similarly to `OS_ENABLE_HW_BOUND_CHECK`), this PR
does not use longjmp because:
* longjmp from signal handler doesn't work on nuttx
  refer to https://github.com/apache/nuttx/issues/10326
* the singal+longjmp approach may be too difficult for average programmers
  who might implement host functions to deal with

See also https://github.com/bytecodealliance/wasm-micro-runtime/issues/1910

core/iwasm/libraries/thread-mgr/thread_manager.c

@@ -1059,6 +1059,10 @@ set_thread_cancel_flags(WASMExecEnv *exec_env)
                                 WASM_SUSPEND_FLAG_TERMINATE);
 
     os_mutex_unlock(&exec_env->wait_lock);
+
+#ifdef OS_ENABLE_WAKEUP_BLOCKING_OP
+    wasm_runtime_interrupt_blocking_op(exec_env);
+#endif
 }
 
 static void