[PR #9873/c9698c8e backport][3.12] Make creating RequestInfo backwards compatible with 3.10

[patchback]

This is a backport of PR #9873 as merged into master (c9698c8).

It was unexpected that this object was being created directly outside of aiohttp internals. While it looks like its only used for mocking internal state downstream, we can accommodate that by subclassing the NamedTuple and providing a __new__ while keeping the faster tuple.__new__ internally.

We might remove the back-compat later in 4.x development cycle, however since its currently being used downstream to mock internals and there isn't a better prescribed way to do that, leave it for now.

fixes #9866

[codspeed-hq]

CodSpeed Performance Report

Merging #9886 will not alter performance

_{Comparing patchback/backports/3.12/c9698c8ecadc344a55e8b05d5c43391e39443ad9/pr-9873 (262a3d5) with master (a118114)}

Summary

✅ 24 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             3.12    #9886   +/-   ##
=======================================
  Coverage        ?   97.99%           
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  Files           ?      119           
  Lines           ?    36397           
  Branches        ?     4363           
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  Hits            ?    35668           
  Misses          ?      545           
  Partials        ?      184           

Flag	Coverage Δ
CI-GHA	97.88% <100.00%> (?)
OS-Linux	97.58% <100.00%> (?)
OS-Windows	94.44% <100.00%> (?)
OS-macOS	96.69% <100.00%> (?)
Py-3.10.11	96.54% <100.00%> (?)
Py-3.10.15	97.09% <100.00%> (?)
Py-3.11.10	97.16% <100.00%> (?)
Py-3.11.9	96.61% <100.00%> (?)
Py-3.12.7	97.65% <100.00%> (?)
Py-3.13.0	97.65% <100.00%> (?)
Py-3.9.13	96.47% <100.00%> (?)
Py-3.9.20	97.05% <100.00%> (?)
Py-pypy7.3.16	96.60% <100.00%> (?)
VM-macos	96.69% <100.00%> (?)
VM-ubuntu	97.58% <100.00%> (?)
VM-windows	94.44% <100.00%> (?)

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