(wip) Remove hardcoded references to eap_spans in EAP RPCs

[colin-sentry]

Continuation of #6701

PR is to make sure tests still pass

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
2713	1	2712	5

View the top 1 failed tests by shortest run time

tests.web.rpc.test_common.TestCommon::test_expression_trace_id

Stack Traces | 0.002s run time

Traceback (most recent call last):
  File ".../web/rpc/test_common.py", line 11, in test_expression_trace_id
    assert attribute_key_to_expression(
AssertionError: assert attr_str['sentry.trace_id'] AS `sentry.trace_id_TYPE_STRING` == CAST(\n  trace_id,\n  'String'\n) AS `sentry.trace_id_TYPE_STRING`
  Full diff:
  + attr_str['sentry.trace_id'] AS `sentry.trace_id_TYPE_STRING`
  - CAST(
  -   trace_id,
  -   'String'
  - ) AS `sentry.trace_id_TYPE_STRING`

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