Migrate HypervisorController to SSA status updates

[fwiesel]

Replace PatchHypervisorStatusWithRetry with Status().Apply() for the InternalIP scalar and ConditionTypeTerminating condition. Re-fetch the hypervisor after the status apply so the subsequent spec patch sees a fresh resourceVersion.

Seed only ConditionTypeTerminating (the sole condition owned by this controller) so SSA does not claim ownership over conditions written by other controllers.

WithInternalIP is only called when the node reports a NodeInternalIP. Combined with ForceOwnership, applying an empty string would clobber a previously stored valid IP whenever the node briefly reports no IP (e.g. during kubelet restart or bootstrap).

The AgentPodsEvicted=False branch previously returned early with a requeue before running syncLabelsAndAnnotations, so node label changes were not propagated to the Hypervisor while terminating. Move the requeue after the spec patch so labels stay in sync.

Depends on #335 (ssa-conditions-helpers).

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[fwiesel]

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⚠️ Note: Baseline coverage from ssa-conditions-helpers branch is not available (artifact may be expired). Showing current coverage for changed files only.

Merging this branch will increase overall coverage

Impacted Packages	Coverage Δ	🤖
github.com/cobaltcore-dev/openstack-hypervisor-operator/internal/controller	68.78% (+68.78%)	🌟

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Coverage by file

Changed files (no unit tests)

Changed File	Coverage Δ	Total	Covered	Missed	🤖
github.com/cobaltcore-dev/openstack-hypervisor-operator/internal/controller/hypervisor_controller.go	78.99% (+78.99%)	119 (+119)	94 (+94)	25 (+25)	🌟

Please note that the "Total", "Covered", and "Missed" counts above refer to code statements instead of lines of code. The value in brackets refers to the test coverage of that file in the old version of the code.