[wasm][workloads] Check downlevel runtime versions

[maraf]

• Add WBT test checking that downlevel versions we compute are lower than versions in "latest" SDK

TODO

• New validation logic
  • If we compute lower version than in SDK => Fail
  • If we compute the same version => OK
  • If we compute +1 than what's in SDK => do it in WBT build and disable tests for downlevel as this is expected directly after servicing release
  • If we comput +2 or more => Fail

Fixes #101809

[lewing]

CI is timing out a lot right now, will restart once things have settled down