chore: drop dead legacy genesis code and unused TLSNotary URL settings

[Shitikyan]

What

• Dead legacy genesis code removed. subOperations.ts has no callers since genesis moved to chainGenesis.ts, and it calls GCR.setGCRNativeBalance, which was removed with the deprecated GCR entities. Its fail-loud test only exercised that dead path through mocks; both are removed.
• Unused TLSNotary URL settings removed. TLSNOTARY_EXPOSED_URL and TLSNOTARY_PROXY_URL were read through undeclared env keys (always empty) and nothing used them; the public notary and proxy URLs come from the node exposed URL and the /tlsn/<port>/ route. Removed from config, types and .env.example.
• Stale fork config test fixed. It expected the placeholder treasury after the default gained a real address in C1-apply binding under gasFeeSeparation + activate gasFee @0 (audit 184) #938; it now reads the default and asserts it is not the placeholder.

Tests

• All fork and TLSNotary test files pass (one file per command); loadForkConfig.test.ts 31/31 (was 30/31 on stabilisation).
• tsc --noEmit: 90 → 81.

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[greptile-apps]

Confidence Score: 5/5

[Medium risk] Removes legacy genesis code and TLSNotary configuration options.

The PR appears safe to merge based on the reviewed changes.

Summary

The PR removes an unused legacy genesis routine and its test, removes TLSNotary URL settings whose semantics are not defined, and strengthens the fork-config treasury test.

• The related SDK uses its own TLSNotary configuration type and does not consume the removed node configuration fields.

_{Reviews (2) · Last reviewed commit: "chore(config): drop the TLSNotary URL se..."}