fix(flow): match alert triggers by rule key or name

[gdemoni]

Summary

• Pass both the canonical alert rule key and display name to the flow dispatcher.
• Match trigger.alert_fired rule filters against either value while preserving case-insensitive substring and minimum-severity behavior.
• Keep the existing trigger payload compatible and add regression coverage for rule keys that differ from display names.

Fixes #410

Testing

• go test ./internal/manager/biz/flow ./internal/manager/biz/alert -count=1
• go vet ./internal/manager/biz/flow ./internal/manager/biz/alert
• go test ./... was run locally; unrelated Windows-specific tests require Unix tools, symlink/file permission support, or ONNX build constraints.

Author confirmation

• I have read and agree to the project contribution guide. Guide: https://github.com/ongridio/ongrid/blob/main/CONTRIBUTING.md

[gdemoni]

Hi maintainers! @singchia

It looks like the workflows for this PR are awaiting approval. When someone please approve them when convenient so the required checks can run? Thank you!

[youzi-1122]

Hi @gdemoni, all three CI jobs have passed. The remaining blocker is required checklist: the rerun of the September 11 workflow failed with Missing required PR checklist item.

The current PR description already has the required checkbox checked, and I verified that it passes the checklist script locally. The rerun appears to be using the older event payload rather than the current description.

Could you please make a small edit to the PR description and save it, keeping the contribution-guide checkbox checked? This will trigger a fresh checklist run. Please do this from your account, since the workflow rejects description-edit events from anyone other than the PR author.

Failed run: https://github.com/ongridio/ongrid/actions/runs/34578423873