feat(asgi): Gate client IP/user info behind data_collection config

[ericapisani]

Apply data_collection.user_info filtering to REMOTE_ADDR/client.address,
falling back to send_default_pii when data_collection is not configured.

Also convert earlier query parameter data collection tests to end-to-end assertions via a real ASGI app.

Ref PY-2586
Ref #6746

[linear-code]

PY-2586

[github-actions]

Codecov Results 📊

✅ 94263 passed | ⏭️ 6338 skipped | Total: 100601 | Pass Rate: 93.7% | Execution Time: 325m 37s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +2385
Passed Tests	📈 +2349
Failed Tests	—
Skipped Tests	📈 +36

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2506 uncovered lines.
❌ Project coverage is 89.65%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
- Coverage    89.68%    89.65%    -0.03%
==========================================
  Files          193       193         —
  Lines        24007     24218      +211
  Branches      8342      8504      +162
==========================================
+ Hits         21530     21712      +182
- Misses        2477      2506       +29
- Partials      1386      1396       +10

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