chore: stop quote polling when tx submission has started

[micaelae]

Explanation

This PR adds a stopPollingForQuotes handler to the bridge controller to prevent quotes from refreshing during tx submission. This enables "pausing" the quote polling loop without resetting the entire state. Without this, it's possible for the activeQuote to change while the UI's tx submission is in-progress

This only needs to be called from submitTx and doesn't need to be explicitly called from the UI.

For clients: stopPollingForQuotes needs to be added to the bridgeStatusController's allowed actions

References

Fixes https://consensyssoftware.atlassian.net/browse/MMS-2188

Changelog

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed, highlighting breaking changes as necessary
• I've prepared draft pull requests for clients and consumer packages to resolve any breaking changes