Remove SSV validators from old staking strategy

[naddison36]

Summary

Updates the Talos removeValidator action to remove validators from the legacy Native Staking Strategy 2 instead of the retired Compounding Staking Strategy.

• Hardcodes Native Staking Strategy 2 and its SSV operator IDs (752,753,754,755)
• Allows --pubkey to contain one or more comma-separated validator public keys
• Validates all supplied public keys before submitting transactions
• Removes validators sequentially with a 30-second delay so the SSV API can refresh cluster state
• Reuses the signer supplied by the standalone Talos runtime
• Updates the Talos action catalog and documentation
• Avoids loading the consolidation signer when no consolidation confirmation transaction is required

Example

cd /app && pnpm exec tsx tasks/run.ts removeValidator --network mainnet --pubkey 0xKEY1,0xKEY2 --consol true

Testing

• Generated and verified the Talos action catalog
• Ran Prettier on the changed TypeScript, JavaScript, and Markdown files
• Verified the diff with git diff --check

[sparrowDom]

LGTM