ref: Use top-level trace_lifecycle and ignore_spans options in tests (#6855)

## Summary
- Replaced all `_experiments={"trace_lifecycle": ...}` with top-level
`trace_lifecycle=...` across 77 test files
- Replaced `_experiments={"ignore_spans": ...}` with top-level
`ignore_spans=...`
- Kept backwards-compat tests in `test_client.py` and
`test_span_streaming.py` that specifically verify `_experiments` still
works and that top-level takes precedence

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: sentrivana

tests/integrations/aiohttp/test_aiohttp.py

@@ -1145,7 +1145,7 @@ async def test_tracing_span_streaming(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
         send_default_pii=send_pii,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1215,7 +1215,7 @@ async def test_sensitive_header_scrubbing_span_streaming(
     sentry_init(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1262,7 +1262,7 @@ async def test_sensitive_header_passthrough_with_pii_span_streaming(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
         send_default_pii=True,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1300,7 +1300,7 @@ async def test_url_query_attribute_span_streaming(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
         send_default_pii=send_pii,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1357,7 +1357,7 @@ async def test_transaction_style_span_streaming(
     sentry_init(
         integrations=[AioHttpIntegration(transaction_style=transaction_style)],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1387,7 +1387,7 @@ async def test_server_error_span_streaming(sentry_init, aiohttp_client, capture_
     sentry_init(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1428,7 +1428,7 @@ async def test_http_exception_span_streaming(
     sentry_init(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1460,7 +1460,7 @@ async def test_http_exception_ok_status_not_overridden_span_streaming(
     sentry_init(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):
@@ -1494,7 +1494,7 @@ async def test_outgoing_client_span_span_streaming(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
         send_default_pii=send_pii,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def handler(request):
@@ -1555,7 +1555,7 @@ async def test_outgoing_trace_headers_span_streaming(
     sentry_init(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def handler(request):
@@ -1589,7 +1589,7 @@ async def test_user_ip_address_on_all_spans(
         integrations=[AioHttpIntegration()],
         traces_sample_rate=1.0,
         send_default_pii=send_default_pii,
-        _experiments={"trace_lifecycle": "stream"},
+        trace_lifecycle="stream",
     )
 
     async def hello(request):