CAMEL-23274: Add incremental coverage to SonarCloud PR analysis

[gnodet]

CAMEL-23274

Summary

Follow-up to #22468 (core coverage) and #22247 (incremental build rationalization).

• Add per-module JaCoCo coverage for PR-affected components by reusing the incremental-build action with -Dcoverage
• Add jacoco:report goal to the coverage profile in parent/pom.xml so each tested module generates its own XML report
• Update sonar.coverage.jacoco.xmlReportPaths to include both per-module and aggregated report paths

Coverage strategy

Scope	Approach	Report path
Core modules	Aggregated report via coverage module (camel-core tests exercise classes across camel-core-model, camel-core-processor, etc.)	coverage/target/site/jacoco-aggregate/jacoco.xml
Components	Per-module reports (each component's tests cover its own classes)	*/target/site/jacoco/jacoco.xml

Dependencies

• Depends on chore(ci): rationalize CI into single workflow with unified comment #22247 (incremental-build action)
• Builds on CAMEL-23274: Enable JaCoCo coverage in SonarCloud PR analysis #22468 (core coverage baseline)

Test plan

• Verify per-module JaCoCo reports are generated for tested components
• Verify SonarCloud picks up both aggregated and per-module coverage data
• Verify incremental-build works with -Dcoverage in MVND_OPTS

[github-actions]

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