[fix][broker]Sync topicPublishRateLimiter update

[AnonHxy]

Motivation

Synchronized update topicPublishRateLimiter in case of race condtion.
There is a race condtion when two threads update topicPublishRateLimiter concurrency：

• topicPublishRateLimiter is null at the beginning
• Thread1 update it with both publishThrottlingRateInByte < 0 and publishThrottlingRateInMsg < 0
• Then thread1 stop at

  pulsar/pulsar-broker/src/main/java/org/apache/pulsar/broker/service/AbstractTopic.java

  Line 1170 in 7bdfa3a

  this.topicPublishRateLimiter = PublishRateLimiter.DISABLED_RATE_LIMITER;

• Thread2 update it with publishThrottlingRateInByte > 0 or publishThrottlingRateInMsg > 0
• And thread2 will set topicPublishRateLimiter a new limiter.
• Then Thread1 resume, and set it to PublishRateLimiter.DISABLED_RATE_LIMITER. Then the new limiter setted by thread2 will never be accessed, which will produce resource leakages

Modifications

Synchronized method updatePublishDispatcher

Verifying this change

• Make sure that the change passes the CI checks.

Documentation

• no-need-doc

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

@Technoboy- @Jason918 @HQebupt PTAL

[AnonHxy]

/pulsarbot run-failure-checks

[AnonHxy]

@gaozhangmin @codelipenghui PTAL~