Enforce zstd compression and 256kb block size

enforce slot based and make offset dynamic (moonbeam-foundation#3740)

* enforce slot based and make offset dynamic

* fix rust tests

* fix: manual seal and lazy-loading and pending block must support relay offset

* fix some dev tests expectations

* tests: lazy loading tests should not always expect migration

* tests: zombie tests should use slot based consensus

* bridge test should use slot based

* fix coderabbit comment

default to lookahead

rebuild rt4203 with official fork branch names

Configure EVM transaction max gas limit to 35 million gas (moonbeam-f…

…oundation#3734)

* update frontier pin

* configure eth tx max gas limit

* configure eth tx max gas limit for tests

* fix dev tests

Runtime 4300

Client v0.50.5