Add binary-trie (EIP-7864) end-to-end test plus CI job for geth

[CPerezz]

Context

client/geth is the only client that supports --binary-trie / TrieModeBinary (others reject at parse via internal/clientpolicy/policy.go). The binary-trie codepath has good unit-test coverage (generator/grouped_emission_test.go, generator/binary_stack_trie.go, internal/entitygen/canonical.go golden constants), but no end-to-end test drives the geth-fork binary against a binary-trie DB and verifies it boots + serves RPC.

This is structurally separate from the MPT cross-client invariant — binary-trie state root is fundamentally different from the MPT root, so a bintrie CI job must NOT participate in the existing cross-client genesis-root aggregator.

Proposed design (geth-only)

1. New test TestE2ESuiteWithBinaryTrie in client/geth/e2e_test.go. Mirrors the existing TestE2ESuite but sets TrieMode: generator.TrieModeBinary + BinaryTrie: true when calling WriteGenesisBlockFull. Pins against a new CanonicalOsakaBinaryTrieRoot constant.
2. New workflow job geth-bintrie-suite in .github/workflows/ci.yml, parallel to (not in matrix with) the existing geth-suite. Uploads geth-bintrie-result.json — explicitly excluded from the cross-client MPT genesis-root aggregator.
3. First CI run will fail with got X; want <unset>; copy the printed hash into the constant in a follow-up commit.

Files to add/modify

• .github/workflows/ci.yml — new geth-bintrie-suite job (template per existing cgo-suite composite action structure, but geth-only and no Docker — geth runs in-process via oracle build tag).
• client/geth/e2e_test.go — new TestE2ESuiteWithBinaryTrie (~80 LoC).
• client/geth/golden_test.go — new TestGethGoldenStateRootBinaryTrie.
• internal/entitygen/canonical.go — new CanonicalOsakaBinaryTrieRoot constant.
• Optional Makefile — new test-geth-bintrie-suite target.

Verified prereqs

client/geth/writer.go:179, 224, 232 already accept binaryTrie bool. The geth-fork submodule supports the path. No upstream work needed.

Out of scope

• Binary-trie support for besu/nethermind/reth. They reject --binary-trie at parse today; landing it would be substantial per-client work.