SNOW-654839: Additional regression test for save_as_table

[sfc-gh-hachouraria]

1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-654839

2. Fill out the following pre-review checklist:

   • [x] I am adding a new automated test(s) to verify correctness of my new code
   • [ ] I am adding new logging messages
   • [ ] I am adding a new telemetry message
   • [ ] I am adding new credentials
   • [ ] I am adding a new dependency

3. Please describe how your code solves the related issue.

   Attempting to save a new dataframe created out of a SELECT * result failed in 0.8.0 but was fixed by SNOW-619431 inadvertently.

   This change adds an additional test covering a scenario where a bulk insert is made from data collected through a SELECT * query (no columns specified).

   This is a test-only change. It makes no changes to any library or API files.

   Testing notes:

   • Ran all of the test suites via pytest
   • Newly added unit test passes on main
   • Verified manually that the unit test also:
     • Passes on tag 0.7.0
     • Fails on tag 0.8.0
     • Passes on tag 0.9.0

   Signature of failure on tag 0.8.0 matches the reported issue in SNOW-654839:

   FAILED tests/integ/scala/test_dataframe_suite.py::test_write_from_collected_dataframe - TypeError: argument of type 'NoneType' is not iterable
   

[sfc-gh-hachouraria]

Hi @sfc-gh-yixie, could you please help review this test-only addition?