fix: wait for confirmed status before fetch tx in test

[aalu1418]

Description

Quick fix to running tests locally - some times the local test validator does not confirm transactions quickly enough. These changes explicitly state waiting for confirmed status before fetching the transaction.

Now:

  24 passing (40s)

✨  Done in 46.48s.

Previous:

  18 passing (23s)
  6 failing

  1) ocr2
       Can call query:
     TypeError: workspace.Store.methods.query(...).accounts(...).options is not a function
      at query (tests/ocr2.spec.ts:118:8)
      at Context.<anonymous> (tests/ocr2.spec.ts:887:23)
      at processImmediate (node:internal/timers:476:21)

  2) ocr2
       Transmit a bunch of rounds to check ringbuffer wraparound:
     TypeError: Cannot read properties of null (reading 'meta')
      at Context.<anonymous> (tests/ocr2.spec.ts:921:21)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

  3) ocr2
       Node payouts happen with the correct decimals:

      AssertionError: expected 15 to equal 2
      + expected - actual

      -15
      +2

      at /Users/chainlink/Documents/chainlink-solana/contracts/tests/ocr2.spec.ts:944:16
      at Array.map (<anonymous>)
      at Context.<anonymous> (tests/ocr2.spec.ts:938:33)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

  4) ocr2
       Transmit reimburses for setComputeUnitPrice:
     TypeError: Cannot read properties of null (reading 'meta')
      at Context.<anonymous> (tests/ocr2.spec.ts:1029:19)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

  5) ocr2
       Reclaims rent exempt deposit when closing down an aggregator:
     TypeError: Cannot read properties of null (reading 'meta')
      at Context.<anonymous> (tests/ocr2.spec.ts:1175:19)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

  6) ocr2
       Can create a feed with no historical ringbuffer:
     TypeError: Cannot read properties of null (reading 'meta')
      at Context.<anonymous> (tests/ocr2.spec.ts:1300:19)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)

[cl-sonarqube-production]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarQube

[jadepark-dev]

Looks good to me!