Fixed Column Structure of chat_messages Table

[MinuraPunchihewa]

Description

This PR fixes running SELECT statements on the chat_messages table by removing the dependency on the eventDetails attribute.

Fixes #9014

Type of change

• 🐛 Bug fix (non-breaking change which fixes an issue)

Verification Process

To ensure the changes are working as expected:

• Test Location: https://github.com/mindsdb/mindsdb/blob/bugfix/ms_teams_event_details/tests/handler_tests/test_ms_teams_handler.py
• Verification Steps: Run the test module indicated above.

Checklist:

• My code follows the style guidelines(PEP 8) of MindsDB.
• I have appropriately commented on my code, especially in complex areas.
• Necessary documentation updates are either made or tracked in issues - N/A.
• Relevant unit and integration tests are updated or added.

[MinuraPunchihewa]

@QuantumPlumber If you could, please check if our chat bot still runs without an issue.

[MinuraPunchihewa]

Tested this locally and it is working.
As shown below, all of the tests are passing as well,