fix(resourcerules): add own mesh to the MeshContext, so it could be successfully resolved

[lobkovilya]

Checklist prior to review

• Link to relevant issue as well as docs and UI issues -- Fix to[].targetRef: Mesh doesn't work, even though it shows up in Inspect API #11512
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS --
• Tests (Unit test, E2E tests, manual test on universal and k8s) --
  • Don't forget ci/ labels to run additional/fewer tests
• Do you need to update UPGRADE.md? --
• Does it need to be backported according to the backporting policy? (this GH action will add "backport" label based on these file globs, if you want to prevent it from adding the "backport" label use no-backport-autolabel label) --

[jakubdyszkiewicz]

The code looks good but if I understand #11512 the really basic case seems to be broken. We've got here because we missed the test. Can we add it?

[lahabana]

I'd strongly argue for keeping the OtherMeshes method and adding a new Meshes method as it would make the change simpler but also makes the API less error prone