template-application-events-java: stamp notify outcome on load/render failures too (#7290)

[nedelcho-delchev-tues]

Summary

• Notification.java.template only wrapped Mail.send in the try that stamps outcome:. The relation loads and the attach: print/report render ran before it, so a load failure (a connection blip, a repository refusal) or a broken .print template propagated straight out of onMessage with no stamp: the broker redelivers forever, the record's outcome field stays empty - the silent state #7023 introduced the stamp to remove - and event: { onNotifyFailed: ... } never fires.
• Widen the try to open right after the guard check, covering the relation loads, the attachment render and the send, mirroring the notify branch of Job.java.template (#7278) and Transition.java.template, which already open their try before the loads.

Note for the maintainers

While tracing this I checked the other two templates carrying the same stampNotifyOutcome machinery. Transition.java.template is correct, as the issue states. Send.java.template, however, appears to have the same gap in both its fan-out and non-fan-out branches - its shared per-record body still only wraps Mail.send, not the relation loads or the attachment render, in either branch. I left it untouched since the issue names only Notification.java.template and I didn't want to expand scope unilaterally on something the issue text asserts is already fixed - flagging it here in case a follow-up issue is warranted.

Test plan

• mvn formatter:validate (repo-wide) - BUILD SUCCESS
• Added a test to IntentEngineIT (an_event_notification_keeps_its_relation_loads_and_attachment_render_inside_the_fail_soft_try) asserting the generated Notification's try opens before the relation load and the attachment render, and both outcome stamps (sent / failed: <reason>) still land inside it
• mvn -pl tests/tests-integrations -am -P integration-tests -Dit.test="IntentEngineIT#an_event_notification_keeps_its_relation_loads_and_attachment_render_inside_the_fail_soft_try" -D selenide.headless=true install - green

Fixes #7290

🤖 Generated with Claude Code