feat(perf-issues): Accept http.method as key for span data

[narsaynorath]

Span data is renaming method -> http.method so this PR checks for both in the backend. I was only able to find one perf issue that relied on method. Could there be other places I need to update to use http.method?

SDK PR: getsentry/sentry-javascript#7990

[codecov]

Codecov Report

Merging #48155 (6c7e23b) into master (9db2a33) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #48155      +/-   ##
==========================================
- Coverage   80.89%   80.89%   -0.01%     
==========================================
  Files        4771     4776       +5     
  Lines      201728   201831     +103     
  Branches    11542    11542              
==========================================
+ Hits       163192   163275      +83     
- Misses      38281    38301      +20     
  Partials      255      255              

Impacted Files	Coverage Δ
...ormance_issues/detectors/large_payload_detector.py	98.07% <ø> (ø)
...s/detectors/render_blocking_asset_span_detector.py	98.46% <ø> (ø)
...ce_issues/detectors/uncompressed_asset_detector.py	93.44% <ø> (ø)
...rmance_issues/detectors/consecutive_db_detector.py	99.13% <100.00%> (ø)

... and 141 files with indirect coverage changes

[gggritso]

I think this should be fine! The other detectors that rely on the HTTP method are ConsecutiveHTTPSpanDetector and NPlusOneAPICallsDetector, both of which use the span's description to get the method, instead of span data 👍🏻

[k-fish]

I'd leave a TODO w/ a cleanup note here that method can be removed likely in 6 month+ when the sdk has been more adopted.