Add tests for streambuffers with different notification index

[glemco]

Description

This PR extends the unit tests for streambuffers to verify also the that the notification index matches, additionally it alters it to verify that we correctly handle different indices as introduced by FreeRTOS/FreeRTOS-Kernel#939

Test Steps

• Go to FreeRTOS/Test/CMock/stream_buffer/
• Run the tests with make
• All the tests should pass

Checklist:

• I have tested my changes. No regression in existing tests.
• I have modified and/or added unit-tests to cover the code changes in this Pull Request.

Related Issue

FreeRTOS/FreeRTOS-Kernel#939

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[glemco]

/bot run formatting

[glemco]

The problems with the spell check seem unrelated to the modified files, also I assume this PR shall be merged only after the functionality is merged and after updating the submodule revision. Is that correct?

[glemco]

It seems one automated test is failing because of higher memory use:

  2024-01-25 15:52:56,248 - INFO - Error:  StreamBuffer - tick count 5001 - free heap 23792 - min free heap 23680 - largest free block 23688 - number of free blocks 4
  2024-01-25 15:53:06,208 - INFO - Error:  StreamBuffer - tick count 10001 - free heap 16112 - min free heap 16000 - largest free block 16008 - number of free blocks 4
  2024-01-25 15:53:16,169 - INFO - Error:  StreamBuffer - tick count 15001 - free heap 8432 - min free heap 8320 - largest free block 8328 - number of free blocks 4
  2024-01-25 15:53:26,126 - INFO - Error:  StreamBuffer - tick count 20001 - free heap 752 - min free heap 640 - largest free block 648 - number of free blocks 4

Since the data structure slightly increased in size I'm assuming the problem is with that and requires increasing some limit in this MingW example. I'll look into that but I'm surprised the other demos (e.g. POSIX) don't fail in the same way.
I guess I need to find a windows machine where to debug this.

[aggarg]

Seems like it should be uxStreamBufferGetStreamBufferNotificationIndex.

[glemco]

Very bad copy paste mistake, thanks for noticing!