fix(price-pusher): export injective/endpoint-pool to unblock CJS build

The exports map drives ts-duality --noEsm CJS compilation. Without an entry for src/injective/endpoint-pool.ts, dist/injective/endpoint-pool.cjs is not generated and dist/injective/injective.cjs fails at runtime when it requires ./endpoint-pool.js. Mirror the pattern used by the other injective files.

Author: 0xghost42

apps/price_pusher/package.json

@@ -113,6 +113,10 @@
       "default": "./dist/injective/command.cjs",
       "types": "./dist/injective/command.d.ts"
     },
+    "./injective/endpoint-pool": {
+      "default": "./dist/injective/endpoint-pool.cjs",
+      "types": "./dist/injective/endpoint-pool.d.ts"
+    },
     "./injective/injective": {
       "default": "./dist/injective/injective.cjs",
       "types": "./dist/injective/injective.d.ts"