fix: Add missing connect call on RedisQueryResultCache connect

[mesinger]

Description of change

Fixes #8725 (comment)

Pull-Request Checklist

• Code is up-to-date with the master branch
• npm run format to apply prettier formatting
• npm run test passes with this change
• This pull request links relevant issues as Fixes #0000
• There are new or updated unit tests validating the change
• Documentation has been updated to reflect this change
• The new commits follow conventions explained in CONTRIBUTING.md

[mesinger]

Whether test nor test-fast work on my machine, I suppose you're aware of that...

[pleerock]

Whether test nor test-fast work on my machine, I suppose you're aware of that...

nope. Why?

[mesinger]

@pleerock

Steps to reproduce

git clone https://github.com/typeorm/typeorm.git
cd typeorm
npm install
npm run test

npm version 8.3.1

fails with

> typeorm@0.3.5 test
> rimraf ./build && tsc && mocha --file ./build/compiled/test/utils/test-setup.js --bail --recursive --timeout 60000 ./build/compiled/test



  benchmark > bulk-save > case1
    1) "before all" hook for "testing bulk save of 10.000 objects"
    2) "after all" hook for "testing bulk save of 10.000 objects"


  0 passing (21ms)
  2 failing

  1) benchmark > bulk-save > case1
       "before all" hook for "testing bulk save of 10.000 objects":
     Error: Cannot find ormconfig.json file in the root of the project. To run tests please create ormconfig.json file in the root of the project (near ormconfig.json.dist, you need to copy ormconfig.json.dist into ormconfig.json and change all database settings to match your local environment settings).
      at getOrmFilepath (test/utils/test-utils.ts:204:15)
      at getTypeOrmConfig (test/utils/test-utils.ts:213:20)
      at setupTestingConnections (test/utils/test-utils.ts:223:45)
      at createTestingConnections (test/utils/test-utils.ts:382:31)
      at Context.<anonymous> (test/benchmark/bulk-save-case1/bulk-save-case1.ts:14:58)
      at processImmediate (node:internal/timers:466:21)

  2) benchmark > bulk-save > case1
       "after all" hook for "testing bulk save of 10.000 objects":
     TypeError: Cannot read properties of undefined (reading 'map')
      at closeTestingConnections (test/utils/test-utils.ts:483:21)
      at Context.<anonymous> (test/benchmark/bulk-save-case1/bulk-save-case1.ts:20:40)
      at processImmediate (node:internal/timers:466:21)