feat: poll Proposed events over http

[mikhailUshakoff]

No description provided.

[Copilot]

Pull request overview

Adds an HTTP/RPC polling fallback for listening to Proposed (and other) contract events when WebSocket log subscriptions are unavailable, improving robustness across different RPC endpoint types.

Changes:

• Introduces EventListenerConfig and refactors listen_for_event to support WS subscription with fallback to getLogs polling.
• Updates the batch proposed receiver to use the new config (including reconnect + polling intervals).
• Bumps workspace crate versions from 1.34.11 to 1.34.12.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 6 comments.

File	Description
common/src/utils/event_listener.rs	Refactors event listening to prefer WS subscriptions and fall back to polling via get_block_number/get_logs.
common/src/chain_monitor/batch_proposed_receiver.rs	Wires the new listener config into the batch proposed receiver and sets reconnect/poll intervals.
Cargo.toml	Workspace version bump to 1.34.12.
Cargo.lock	Updates lockfile versions for workspace crates to 1.34.12.

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