Track EEST EIP-7623 admission deviations

[kollegian]

Context

PR #4064 enables upstream Ethereum execution-spec tests against a live Sei devnet. The following selection rules currently skip vectors that expose Sei-specific EIP-7623 admission behavior:

• eip7623-admission
• eip7623-floor-data-gas

These are implementation deviations rather than limitations of EEST remote execution and must remain visible and removable.

Expected behavior

Sei should produce the Prague-compatible transaction admission and floor-data-gas outcomes expected by the upstream vectors.

Completion criteria

• Reproduce and fix both skipped vector groups.
• Run the affected EEST vectors against a clean Sei devnet.
• Remove both skip rules from integration_test/exec_specs/plugin/eest_plugin.py.