Fix semconv test expectations

The CI failures were caused by test expectations that no longer matched
database and messaging semantic convention behavior. The DB span name test
strictly stubbed a namespace that is intentionally skipped when collection name
is preferred, the InfluxDB UDP old-semconv span name expected an endpoint even
though old naming only uses the operation, and the Pulsar multi-topic test
assumed message ids are always present on receive/process spans.

Updated the affected assertions to match the emitted telemetry while preserving
strict checks everywhere else. Validated with:
.\gradlew.bat :instrumentation-api-incubator:testBothSemconv :instrumentation-api-incubator:testStableSemconv --tests DbClientSpanNameExtractorTest
.\gradlew.bat :instrumentation:influxdb-2.4:javaagent:test --tests InfluxDbClientTest.testWriteWithUdp
.\gradlew.bat :instrumentation:influxdb-2.4:javaagent:test --tests InfluxDbClientTest.testWriteWithUdp -PtestLatestDeps=true
.\gradlew.bat :instrumentation:pulsar:pulsar-2.8:javaagent:test --tests PulsarClientTest.testConsumeMultiTopics
.\gradlew.bat :instrumentation:pulsar:pulsar-2.8:javaagent:test --tests PulsarClientTest.testConsumeMultiTopics -PtestLatestDeps=true

Author: trask

instrumentation-api-incubator/src/test/java/io/opentelemetry/instrumentation/api/incubator/semconv/db/DbClientSpanNameExtractorTest.java

@@ -125,7 +125,7 @@ void shouldPreferCollectionNameOverNamespace() {
 
     if (emitStableDatabaseSemconv()) {
       when(dbAttributesGetter.getDbOperationName(dbRequest)).thenReturn("SELECT");
-      when(dbAttributesGetter.getDbNamespace(dbRequest)).thenReturn("database");
+      lenient().when(dbAttributesGetter.getDbNamespace(dbRequest)).thenReturn("database");
       when(dbAttributesGetter.getDbCollectionName(dbRequest)).thenReturn("users");
     }
     if (emitOldDatabaseSemconv() && !emitStableDatabaseSemconv()) {

instrumentation/influxdb-2.4/javaagent/src/test/java/io/opentelemetry/javaagent/instrumentation/influxdb/v2_4/InfluxDbClientTest.java

@@ -444,7 +444,7 @@ void testWriteWithUdp() {
                     span.hasName(
                             emitStableDatabaseSemconv()
                                 ? "write " + host + ":" + port
-                                : "WRITE " + host + ":" + port)
+                                : "WRITE")
                         .hasKind(SpanKind.CLIENT)
                         .hasAttributesSatisfyingExactly(
                             equalTo(maybeStable(DB_SYSTEM), INFLUXDB),