⚡ Bolt: Optimize travel session state update

[ClarusIubar]

💡 What: Replaced unconditional .map() with .findIndex() for updating the travelSessions array in publishRouteAction.ts.
🎯 Why: .map() creates a new array reference every time, even if no items match. This breaks referential equality and causes unnecessary re-renders in any React components that depend on the travelSessions state.
📊 Impact: Reduces O(N) memory allocations to O(1) in the worst-case scenario (when the item isn't found or when updating just one item). This preserves referential equality for the array and unmodified items, preventing React from cascading unnecessary re-renders.
🔬 Measurement: Verified functionality using unit, regression, integration, and smoke tests to ensure no regressions occurred during the state patch.

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PR created automatically by Jules for task 2495762367520671538 started by @ClarusIubar

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