Flaky unit tests in CI

[furkatgofurov7]

What happened:
Looks like the ci job run ci checks flakes a lot in PRs time to time with mainly 2 different errors:

1. https://github.com/rancher/cluster-api-provider-rke2/blob/main/controlplane/internal/controllers/rke2controlplane_controller_test.go#L229-L250

• [FAILED] [3.335 seconds]
Reconclie control plane conditions [BeforeEach] should reconcile cp and machine conditions successfully
  [BeforeEach] /home/runner/work/cluster-api-provider-rke2/cluster-api-provider-rke2/controlplane/internal/controllers/rke2controlplane_controller_test.go:35
  [It] /home/runner/work/cluster-api-provider-rke2/cluster-api-provider-rke2/controlplane/internal/controllers/rke2controlplane_controller_test.go:229

  [FAILED] Timed out after 1.000s.
  Expected success, but got an error:
      <*errors.StatusError | 0xc000[43](https://github.com/rancher/cluster-api-provider-rke2/actions/runs/10576900841/job/29303887583#step:6:44)0aa0>: 
      Node "ref-node" not found
      {
          ErrStatus: {
              TypeMeta: {Kind: "", APIVersion: ""},
              ListMeta: {
                  SelfLink: "",
                  ResourceVersion: "",
                  Continue: "",
                  RemainingItemCount: nil,
              },
              Status: "Failure",
              Message: "Node \"ref-node\" not found",
              Reason: "NotFound",
              Details: {Name: "ref-node", Group: "", Kind: "Node", UID: "", Causes: nil, RetryAfterSeconds: 0},
              Code: 404,
          },
      }
  In [BeforeEach] at: /home/runner/work/cluster-api-provider-rke2/cluster-api-provider-rke2/controlplane/internal/controllers/rke2controlplane_controller_test.go:138 @ 08/27/24 11:14`

2. https://github.com/rancher/cluster-api-provider-rke2/blob/main/pkg/rke2/workload_cluster_test.go#L267-L309

• [FAILED] [0.023 seconds]
Node metadata propagation [It] should set the node annotations for an arbitrary node reference
/home/runner/work/cluster-api-provider-rke2/cluster-api-provider-rke2/pkg/rke2/workload_cluster_test.go:2[67](https://github.com/rancher/cluster-api-provider-rke2/actions/runs/10576429368/job/29302746680#step:6:68)

  [FAILED] Expected
      <map[string]string | len:1>: {
          "cluster.x-k8s.io/machine": "other-machine",
      }
  to equal
      <map[string]string | len:2>: {
          "cluster.x-k8s.io/machine": "other-machine",
          "test": "true",
      }
  In [It] at: /home/runner/work/cluster-api-provider-rke2/cluster-api-provider-rke2/pkg/rke2/workload_cluster_test.go:305 @ 08/27/24 10:48:29.9[76](https://github.com/rancher/cluster-api-provider-rke2/actions/runs/10576429368/job/29302746680#step:6:77)

What did you expect to happen:
make test always pass without flakes

How to reproduce it:
Can be hit if run locally multiple times or in the CI:

• https://github.com/rancher/cluster-api-provider-rke2/actions/runs/10576900841/job/29303887583

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• rke provider version: v0.5.0
• OS (e.g. from /etc/os-release): macOS