feat(kminion): add opt-in topologySpreadConstraints to deployment and daemonset

[somaz94]

Adds an opt-in topologySpreadConstraints field to the kminion chart's Deployment and DaemonSet, mirroring the existing knob in the sibling connect chart (charts/connect). It defaults to [], so the rendered output is unchanged unless a user sets it.

This rounds out kminion's scheduling knobs (it already exposes nodeSelector, affinity and tolerations).

Validation (run locally):

• ct lint --charts charts/kminion: all charts linted successfully
• actionlint: clean
• helm template with default values: field is absent, render is byte-identical to before
• helm template with a constraint set: renders correctly on both the Deployment and the DaemonSet
• README regenerated with helm-docs v1.14.2

related: #1040

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