[improve][monitor][branch-4.0] Upgrade OpenTelemetry libraries

[shibd]

Motivation

Backport the OpenTelemetry upgrades from #25662, #25779 and #25906 to branch-4.0.

This updates the OpenTelemetry dependencies used by Pulsar 4.0.x to include the fixes shipped in OpenTelemetry 1.62.0 and aligns the Maven build with the corresponding changes already merged on master.

Modifications

• upgrade OpenTelemetry Java to 1.62.0
• upgrade OpenTelemetry instrumentation to 2.28.1 and semconv to 1.41.1
• switch pulsar-opentelemetry from opentelemetry-runtime-telemetry-java17 to opentelemetry-runtime-telemetry
• update OpenTelemetryService to use the new RuntimeTelemetry API
• preserve the pre-1.62.0 Prometheus exporter host default (0.0.0.0) to avoid a metrics reachability regression
• add a test covering the Prometheus host default behavior

Verification

• mvn -pl pulsar-opentelemetry -am -DskipTests package
• mvn -pl pulsar-broker -am -DskipTests package