[FEATURE] Fix Gauntlet test: testQueueCapacityDecider

[khushbr]

testQueueCapacityDecider is currently failing in the main branch Gauntlet test workflow. The stacktrace taken from run 5259225360

java.lang.IllegalStateException: RCA-IT fails if some errors are found in the logs. If you think these errors are okay to ignore, you can use the @AErrorPatternIgnored to ignore them. Please see RcaItPocSingleNode.simple() for an example.
  The Runner found the following errors in log: [
  20:09:00.809 [grpc-nio-worker-ELG-12-1] ERROR ResourceLeakDetector:reportTracedLeak()::line:319 - LEAK: ByteBuf.release() was not called before it's garbage-collected. See https://netty.io/wiki/reference-counted-objects.html for more information.
  Recent access records: 
  Created at:
  	io.netty.buffer.PooledByteBufAllocator.newDirectBuffer(PooledByteBufAllocator.java:403)
  	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:188)
  	io.netty.buffer.AbstractByteBufAllocator.directBuffer(AbstractByteBufAllocator.java:179)
  	io.netty.buffer.AbstractByteBufAllocator.buffer(AbstractByteBufAllocator.java:116)
  	io.grpc.netty.NettyAdaptiveCumulator.mergeWithCompositeTail(NettyAdaptiveCumulator.java:193)
  	io.grpc.netty.NettyAdaptiveCumulator.addInput(NettyAdaptiveCumulator.java:110)

[dblock]

[Triage -- attendees 1, 2, 3, 4, 5, 6, 7]