Merge pull request #5062 from mempool/mononaut/configurable-tip-monitoring

Configurable threshold for esplora tip check

backend/src/__tests__/config.test.ts

@@ -63,6 +63,7 @@ describe('Mempool Backend Config', () => {
         REQUEST_TIMEOUT: 10000,
         FALLBACK_TIMEOUT: 5000,
         FALLBACK: [],
+        MAX_BEHIND_TIP: 2,
        });
 
       expect(config.CORE_RPC).toStrictEqual({