fix: resolve flaky acceptance tests during initialization

[avorylli]

Problem

Issue #17084

Acceptance tests were failing intermittently during initialization with:

• 404 errors when getting balance from faucet
• "Waiting for online" timeouts when L1 network couldn't connect to EL node

Root Cause

Race conditions during system initialization where tests tried to use services before they were fully ready.

Solution

• Enhanced EL node readiness checks with increased timeouts (10s → 30s)
• Added pre-flight checks before balance requests
• Increased faucet retry attempts (3 → 5)
• Added explicit network readiness checks in tests
• Improved synchronization with safety delays
• Added retry utilities for better error handling

Files Changed

• op-devstack/dsl/eoa.go - Enhanced balance lookup
• op-devstack/dsl/el.go - Improved readiness checks
• op-devstack/dsl/faucet.go - Enhanced retry logic
• op-devstack/dsl/funder.go - Added safety delays
• op-devstack/dsl/retry_utils.go - New retry utilities
• op-acceptance-tests/tests/base/faucet_test.go - Added readiness checks
• op-acceptance-tests/tests/base/deposit/deposit_test.go - Added readiness checks

[opgitgovernance]

This pr has been automatically marked as stale and will be closed in 5 days if no updates

[avorylli]

@smartcontracts @pcw109550

[pcw109550]

/ci authorize 83bc576

[opgitgovernance]

This pr has been automatically marked as stale and will be closed in 5 days if no updates

[avorylli]

@pcw109550