fix(meshtimeout): don't set default timeouts on inbound cluster and listener (backport of #12043)

[kumahq[bot]]

Automatic cherry-pick of #12043 for branch release-2.7

Generated by action

cherry-picked commit 844c9881c6079b8f6064b0bf7c17f49a05e5e853 :warning: :warning: :warning: Conflicts happened when cherry-picking! :warning: :warning: :warning:

On branch release-2.7
Your branch is up to date with 'origin/release-2.7'.

You are currently cherry-picking commit 844c9881c.
  (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:
    new file:   pkg/plugins/policies/meshtimeout/plugin/testdata/basic_without_defaults_inbound_cluster.golden.yaml
    new file:   pkg/plugins/policies/meshtimeout/plugin/testdata/basic_without_defaults_inbound_listener.golden.yaml
    modified:   pkg/plugins/policies/meshtimeout/plugin/v1alpha1/plugin_test.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
    both modified:   pkg/plugins/policies/meshtimeout/plugin/v1alpha1/plugin.go

[lukidzi]

Not required, introduced in 2.9