BOLT-1004: Add unit tests for adapters/program cache wrappers

Artem asked in Slack thread 1779714334.306909 to implement tests described from PR #10953. Add adapters/program/src/common/cache/index.test.ts covering redis wrapper contract: get success returns value and operation.end; get redis error returns null and operation.fail; set passes redis.set(key,value,"EX",expirySeconds); del logs numItemsDeleted. Use jest.mock("@/common/cache/redis", () => ({ connectRedis: jest.fn() })). Open PR titled: test(adapters/program): cache wrappers swallow redis errors and return null (BOLT-1004).