feat(bridge-controller): add has_gas_included_quote and usd_balance_source to QuotesReceived event

[rarquevaux]

Description

Adds two new optional properties to the QuotesReceived event:

• has_gas_included_quote: Boolean indicating if any quote has gas included
• usd_balance_source: Optional USD value of source token balance (client-provided)

No breaking changes.

---

Note

Introduces new metrics fields and updates plumbing for QuotesReceived analytics.

• Compute has_gas_included_quote in #getQuoteFetchData and include in QuoteFetchData and related events
• Add optional usd_balance_source to QuotesReceived and getQuotesReceivedProperties, defaulting to 0
• Update types in utils/metrics/types.ts, logic in utils/metrics/properties.ts, and associated tests/snapshots
• Update CHANGELOG.md

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