3.x: Fix deadlock health check if invoking the ThreadMXBean fails (#9910)

[Captain1653]

Description

Fixes #9910

The similar logic was done for 4.x. Is it better to be consistent between 3.x and 4.x ?

Unfortunately, we can't return the status ERROR, because for 3.x exists only statuses UP and DOWN. But we can throw HealthCheckException. I hope, that it's appropriate. Return UP when app can't get ThreadMXBean is too optimistic.

P.S. DiskSpaceHealthCheck in 3.x does the similar thing:

try {
      this.fileStore = Files.getFileStore(builder.path);
 } catch (IOException e) {
      throw new HealthCheckException("Failed to obtain file store for path " + builder.path.toAbsolutePath(), e);
 }

[tjquinno]

Please see the requested change.

[tjquinno]

One change requested.

[Captain1653]

@tjquinno Can it be merged? Please :)