Vela Core cue upgrade 0.14 deprecates list arithmetic operators addons incompatiblity

[oanasc]

Summary
Upgrading to CUE v0.14.1 in Vela Core in this PR (future release) causes template validation failures for addons that still use deprecated list arithmetic operators (listA + listB). List addition was removed starting in CUE v0.11 and superseded by list.Concat. Addons that have not migrated to the new syntax fail during manifest generation.

Reference: https://cuelang.org/docs/concept/faq/removing-list-arithmetic-operators-v0.11/

Impact

Addons using list addition (+) fail during template evaluation.Application health status cannot be collected.

Affects FluxCD addon components (observed in image automation and kustomize controllers).

0226 19:07:22.086238       1 application_controller.go:810] "Failed to collect health status" err=<
	GenerateComponentManifest: evaluate template trait=command app=fluxcd-image-automation-controller: validation failed for trait command:

	Template errors:
	  patch.spec.template.spec.containers.0.args: Addition of lists is superseded by list.Concat; see https://cuelang.org/e/v0.11-list-arithmetic
 > application="vela-system/addon-fluxcd" controller="application" resource_version="13314" generation=1 publish_version="addon-20260226170927748" spanID="i-47t4jc2a"
W0226 19:07:23.562296       1 template.go:321] Trait definition 'command' has malformed 'errs' field (expected []string): patch.spec.template.spec.containers.0.args: Addition of lists is superseded by list.Concat; see https://cuelang.org/e/v0.11-list-arithmetic. Custom error reporting will be skipped.
E0226 19:07:23.564109       1 application_controller.go:810] "Failed to collect health status" err=<
	GenerateComponentManifest: evaluate template trait=command app=fluxcd-kustomize-controller: validation failed for trait command: