JSONResultsReader iterator called on oneshot search does not iterate with for loop.

Describe the bug
JSONResultsReader iterator called on oneshot search does not iterate with for loop.

To Reproduce
-run a oneshot search, the notice the for content/command[s] fails.

reader = JSONResultsReader(result_stream)
for item in reader:
    print(item)

Expected behavior
iterate through the results and take action on.

Logs or Screenshots
If applicable, add logs or screenshots to help explain your problem.

Splunk (please complete the following information):

• Version: Splunk Enterprise 9.1.1
• OS: Rocky Linux 9.6
• Deployment: Distributed/Clustered SH's and IDX's architecture

SDK (please complete the following information):

• Version: [2.1.0 and 2.1.1]
• Language Runtime Version: Python 3.12.3
• OS: Ubuntu 24.04.2 LTS

Additional context
This issue is only impacting the "oneshot" type search, with "normal" type search successfully yields an iterable "reader" for reader = JSONResultsReader(result_stream).

The workaround is to do:

reader = JSONResultsReader(result_stream)
reader2 = list(reader)
for item in reader2:
    print(item)

Start by reproducing the provided JSONResultsReader snippet with both oneshot and normal searches, then inspect the JSONResultsReader iterator entry point and any existing tests. Done means a reader from a oneshot search supports direct for-loop iteration without first converting it to a list, with coverage for the differing search modes.