fix(frontend): flag Solana account creation recipients

[cursor]

Motivation

A Solana WalletConnect transaction could combine a SystemProgram.createAccount instruction with a later SOL transfer. The review summary summed both lamport movements, but raw CreateAccount mapping omitted the created account recipient, so the UI could show only the later transfer destination while approval still signed the full transaction.

Changes

• Map raw Solana CreateAccount instructions with the created account as destination.
• Reuse the existing ambiguous-transaction guard so bundled SOL movements to different recipients are rejected instead of shown as a single misleading transfer.
• Added regression coverage for the hidden account-creation recipient scenario and updated the existing fixture expectation.

Tests

• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run test -- --run src/frontend/src/tests/sol/utils/sol-instructions.utils.spec.ts src/frontend/src/tests/sol/utils/sol-transactions.utils.spec.ts
• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run format
• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run lint -- --max-warnings 0
• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run check
• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run test
• PATH="/home/ubuntu/.nvm/versions/node/v24.17.0/bin:$PATH" npm run lint:lockfile