Stop hiding scheduling type for away jobs

[JamesMurkin]

Currently we mark all jobs scheduled away as SchedulingType="away", however this means the actual scheduling type is lost (i.e was it scheduled was preemption or not?)

I've now removed the ScheduleAsAwayJob SchedulingType and we now leverage the existing ScheduledAway flag

This is now reflected in metrics with a new label 'placement_type' which determines if the scheduling was home or away

[greptile-apps]

Greptile Summary

The PR separates placement location from scheduling method so away jobs retain whether they were scheduled normally or through preemption.

• Removes the ScheduledAsAwayJob scheduling-method value.
• Records away placement through the existing ScheduledAway flag.
• Adds a placement_type label to scheduled-job metrics.
• Updates node-database and metrics tests for the separated dimensions.

Confidence Score: 5/5

The PR appears safe to merge with no concrete correctness, security, or compatibility failure identified.

Successful home and away selection paths consistently assign the actual scheduling method, away placement is represented independently, and the metric's new label cardinality is handled correctly in production and tests.

Important Files Changed

Filename	Overview
internal/scheduler/nodedb/nodedb.go	Preserves the scheduling method selected by the shared node-selection path while marking successful away placement separately.
internal/scheduler/metrics/cycle_metrics.go	Adds the placement dimension to scheduled-job metrics and derives it independently from the scheduling method.
internal/scheduler/scheduling/context/pod.go	Removes the obsolete away scheduling-method constant without leaving repository references.
internal/scheduler/nodedb/nodedb_test.go	Updates away-placement assertions to verify both the placement flag and actual scheduling method.
internal/scheduler/metrics/cycle_metrics_test.go	Updates metric label values used by reset and disable tests for the new placement dimension.

_{Reviews (1): Last reviewed commit: "Stop hiding scheduling type for away job..." | Re-trigger Greptile}

[mergify]

Tick the box to add this pull request to the merge queue (same as @mergifyio queue).

• Queue this pull request