Update chapter09 to MicroProfile Telemetry 2.1 and LGTM stack

- Replace Telemetry 1.1 dependency with MicroProfile 7.1 BOM + OpenTelemetry API 1.48.0
- Remove outdated Jaeger docker run; add LGTM stack setup section with port table, Grafana data source config, and per-signal verification steps
- Add Meter/LongCounter instrumentation to match actual PaymentService code
- Add otel.metrics.exporter and otel.logs.exporter to config (all three signals)
- Update PaymentService example to use makeCurrent(), setStatus(), addEvent(), recordException() as implemented in code/chapter09
- Remove duplicate paragraphs and redundant section
- Fix "Graphana Tempo" typo and unclosed string literal in code snippet

Author: ttelang