正确处理InterruptException

Sonar-2142: "InterruptedException" should not be ignored

weixin-java-common/src/main/java/me/chanjar/weixin/common/session/StandardSessionManager.java

@@ -196,6 +196,7 @@ public class StandardSessionManager implements WxSessionManager, InternalSession
               Thread.sleep(StandardSessionManager.this.backgroundProcessorDelay * 1000L);
               backgroundProcess();
             } catch (InterruptedException e) {
+              Thread.currentThread().interrupt();
               StandardSessionManager.this.log.error("SessionManagerImpl.backgroundProcess error", e);
             }
           }