CAMEL-23313: HeaderFilter Strategies - add lowerCase where it's not present - JMS, SJMS, CoAP, Google PubSub

[oscerd]

Summary

Adds setLowerCase(true) to five HeaderFilterStrategy implementations for consistency with the other components that already call it (HttpHeaderFilterStrategy, Sqs2HeaderFilterStrategy, MailHeaderFilterStrategy, KafkaHeaderFilterStrategy, etc.):

• camel-jms: JmsHeaderFilterStrategy, ClassicJmsHeaderFilterStrategy
• camel-sjms: SjmsHeaderFilterStrategy
• camel-coap: CoAPHeaderFilterStrategy
• camel-google-pubsub: GooglePubsubHeaderFilterStrategy

This aligns the startsWith filter behaviour across components, matching the pattern established in the CAMEL-21885 series of changes.

Tracked as CAMEL-23313.

Test plan

• mvn -DskipTests install in each affected module (camel-jms, camel-sjms, camel-coap, camel-google-pubsub) - all green
• mvn -Dtest=PubsubHeaderFilterTest test in camel-google-pubsub - 13/13 pass
• mvn -Dtest=CoAPHeaderFilterStrategyTest test in camel-coap - 2/2 pass
• CI will exercise the JMS/SJMS integration tests (require Artemis broker)

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Claude Code on behalf of Andrea Cosentino

[github-actions]

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[davsclaus]

We could also make DefaultFilterStrategy having lowercase = true as default it seems