[RHOCP 4] istio-proxy container unable to start due to "failed to fetch token from file: open /var/run/secrets/kubernetes.io/serviceaccount/token: no such file or directory"

Issue

• Application part of OpenShift Service Mesh has issue with istio-proxy container, istio-proxy container fails to start.

• istio-proxy container startup fails with below error

  2023-11-28T03:38:36.819279Z warn    failed to fetch token from file: open /var/run/secrets/kubernetes.io/serviceaccount/token: no such file or directory
  2023-11-28T03:38:36.820159Z warn    sds failed to warm certificate: failed to generate workload certificate: create certificate: rpc error: code = Unauthenticated desc = request authenticate failure
  2023-11-28T03:38:39.339634Z error   failed scraping envoy metrics: error scraping http://localhost:15090/stats/prometheus: Get "http://localhost:15090/stats/prometheus": dial tcp [::1]:15090: connect: connection refused
  2023-11-28T03:38:41.787205Z warn    failed to fetch token from file: open /var/run/secrets/kubernetes.io/serviceaccount/token: no such file or directory
  2023-11-28T03:38:41.788095Z warn    sds failed to warm certificate: failed to generate workload certificate: create certificate: rpc error: code = Unauthenticated desc = request authenticate failure
  2023-11-28T03:38:48.214044Z warn    failed to fetch token from file: open /var/run/secrets/kubernetes.io/serviceaccount/token: no such file or directory
  2023-11-28T03:38:48.214074Z info    xdsproxy    connected to upstream XDS server: istiod-basic.istio-system.svc:15012
  2023-11-28T03:38:48.214911Z warn    xdsproxy    upstream [7] terminated with unexpected error rpc error: code = Unauthenticated desc = authentication failure
  2023-11-28T03:38:48.215277Z warning envoy config    StreamAggregatedResources gRPC config stream to xds-grpc closed: 16, authentication failure