cecf/opentelemetry-java-instrumentation: java agent代码 @ v250_kafka

Steve Rao 3b15791d49 Modified UT method name from Spock to Java (#10601)		1 rok temu
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javaagent	fd9ef741a0 Migrate rxjava3 unit tests to Java (#7924)	1 rok temu
library	3b15791d49 Modified UT method name from Spock to Java (#10601)	1 rok temu