fix(kuma-cp): pass context via snapshot reconciler to generateCerts (backport of #7231)

[kumahq]

Automatic cherry-pick of #7231 for branch release-2.0

Generated by action

cherry-picked commit df9c5f9
⚠️ ⚠️ ⚠️ Conflicts happened when cherry-picking! ⚠️ ⚠️ ⚠️

On branch release-2.0
Your branch is up to date with 'origin/release-2.0'.

You are currently cherry-picking commit df9c5f925.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   pkg/xds/generator/admin_proxy_generator.go
	modified:   pkg/xds/generator/admin_proxy_generator_test.go
	modified:   pkg/xds/generator/core/resource_generator.go
	modified:   pkg/xds/generator/direct_access_proxy_generator_test.go
	modified:   pkg/xds/generator/dns_generator.go
	modified:   pkg/xds/generator/dns_generator_test.go
	modified:   pkg/xds/generator/egress/external_services_generator.go
	modified:   pkg/xds/generator/egress/generator.go
	modified:   pkg/xds/generator/egress/generator_test.go
	modified:   pkg/xds/generator/egress/internal_services_generator.go
	modified:   pkg/xds/generator/inbound_proxy_generator.go
	modified:   pkg/xds/generator/ingress_generator_test.go
	modified:   pkg/xds/generator/probe_generator.go
	modified:   pkg/xds/generator/probe_generator_test.go
	modified:   pkg/xds/generator/prometheus_endpoint_generator_test.go
	modified:   pkg/xds/generator/proxy_template.go
	modified:   pkg/xds/generator/proxy_template_profile_source_test.go
	modified:   pkg/xds/generator/proxy_template_test.go
	modified:   pkg/xds/generator/tracing_proxy_generator_test.go
	modified:   pkg/xds/generator/transparent_proxy_generator_test.go
	modified:   pkg/xds/secrets/secrets.go
	modified:   pkg/xds/secrets/secrets_test.go
	modified:   pkg/xds/server/v3/snapshot_generator_test.go

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   pkg/plugins/policies/meshaccesslog/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshcircuitbreaker/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshfaultinjection/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshhealthcheck/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshloadbalancingstrategy/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshratelimit/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshretry/plugin/v1alpha1/plugin_test.go
	deleted by us:   pkg/plugins/policies/meshtimeout/plugin/v1alpha1/plugin_test.go
	both modified:   pkg/plugins/runtime/gateway/gateway_route_generator_test.go
	both modified:   pkg/plugins/runtime/gateway/generator.go
	both modified:   pkg/plugins/runtime/gateway/listener_generator_test.go
	both modified:   pkg/test/xds/secrets.go
	both modified:   pkg/xds/generator/direct_access_proxy_generator.go
	both modified:   pkg/xds/generator/inbound_proxy_generator_test.go
	both modified:   pkg/xds/generator/ingress_generator.go
	both modified:   pkg/xds/generator/outbound_proxy_generator.go
	both modified:   pkg/xds/generator/outbound_proxy_generator_test.go
	both modified:   pkg/xds/generator/prometheus_endpoint_generator.go
	both modified:   pkg/xds/generator/secrets/generator.go
	both modified:   pkg/xds/generator/secrets/generator_test.go
	both modified:   pkg/xds/generator/tracing_proxy_generator.go
	both modified:   pkg/xds/generator/transparent_proxy_generator.go
	both modified:   pkg/xds/server/v3/reconcile.go
	both modified:   pkg/xds/server/v3/reconcile_test.go
	both modified:   pkg/xds/sync/dataplane_watchdog.go
	both modified:   pkg/xds/sync/dataplane_watchdog_test.go
	both modified:   pkg/xds/sync/interfaces.go