feat(aiohttp): Add http.route attribute

[alexander-alderman-webb]

Description

Set the http.route attribute on the server span in patches for aiohttp endpoints.

Issues

Reminders

• Please add tests to validate your changes, and lint your code using uv run ruff.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

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[github-actions]

Codecov Results 📊

✅ 130429 passed | ⏭️ 7110 skipped | Total: 137539 | Pass Rate: 94.83% | Execution Time: 480m 24s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +11
Passed Tests	📈 +11
Failed Tests	—
Skipped Tests	—

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2507 uncovered lines.
✅ Project coverage is 90.24%. Comparing base (base) to head (head).

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    90.24%    90.24%        —%
==========================================
  Files          193       193         —
  Lines        25692     25696        +4
  Branches      9472      9474        +2
==========================================
+ Hits         23186     23189        +3
- Misses        2506      2507        +1
- Partials      1442      1443        +1

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