chore(trace-item-types): throw an error if no trace item type is specified

[colin-sentry]

getsentry/sentry#83530 made the sentry backend send trace_item_type with every request, so now we can get rid of this unspecified => span assumption

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
2798	1	2797	11

View the top 1 failed tests by shortest run time

tests.web.rpc.v1.test_endpoint_trace_item_table.test_endpoint_trace_item_table_extrapolation.TestTraceItemTableWithExtrapolation::test_aggregation_on_attribute_column

Stack Traces | 0.237s run time

Traceback (most recent call last):
  File ".../v1/test_endpoint_trace_item_table/test_endpoint_trace_item_table_extrapolation.py", line 209, in test_aggregation_on_attribute_column
    response = EndpointTraceItemTable().execute(message)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../web/rpc/__init__.py", line 125, in execute
    return self.__after_execute(in_msg, out, error)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../web/rpc/__init__.py", line 146, in __after_execute
    raise error
  File ".../web/rpc/__init__.py", line 121, in execute
    out = self._execute(in_msg)
          ^^^^^^^^^^^^^^^^^^^^^
  File ".../rpc/v1/endpoint_trace_item_table.py", line 103, in _execute
    raise BadSnubaRPCRequestException(
snuba.web.rpc.common.exceptions.BadSnubaRPCRequestException: This endpoint requires meta.trace_item_type to be set (are you requesting spans? logs?)

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📢 Thoughts on this report? Let us know!

[onkar]

@colin-sentry Can you add test that verifies that BadSnubaRPCRequestException is raised when no trace item type is specified.

[colin-sentry]

@colin-sentry Can you add test that verifies that BadSnubaRPCRequestException is raised when no trace item type is specified.

done