Use identity checks for all WSMsgType type compares

[bdraco]

What do these changes do?

Some of the checks used is and some used equality. Since enums are singletons they should all use is as its faster and more efficient

Are there changes in behavior for the user?

no

Is it a substantial burden for the maintainers to support this?

no

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep alphabetical order, the file is sorted by names.
• Add a new news fragment into the CHANGES/ folder

  • name it <issue_or_pr_num>.<type>.rst (e.g. 588.bugfix.rst)

  • if you don't have an issue number, change it to the pull request
    number after creating the PR

    • .bugfix: A bug fix for something the maintainers deemed an
      improper undesired behavior that got corrected to match
      pre-agreed expectations.
    • .feature: A new behavior, public APIs. That sort of stuff.
    • .deprecation: A declaration of future API removals and breaking
      changes in behavior.
    • .breaking: When something public is removed in a breaking way.
      Could be deprecated in an earlier release.
    • .doc: Notable updates to the documentation structure or build
      process.
    • .packaging: Notes for downstreams about unobvious side effects
      and tooling. Changes in the test invocation considerations and
      runtime assumptions.
    • .contrib: Stuff that affects the contributor experience. e.g.
      Running tests, building the docs, setting up the development
      environment.
    • .misc: Changes that are hard to assign to any of the above
      categories.

  • Make sure to use full sentences with correct case and punctuation,
    for example:

    Fixed issue with non-ascii contents in doctest text files
    -- by :user:`contributor-gh-handle`.

    Use the past tense or the present tense a non-imperative mood,
    referring to what's changed compared to the last released version
    of this project.

[codecov]

Codecov Report

Attention: Patch coverage is 85.71429% with 2 lines in your changes missing coverage. Please review.

Project coverage is 97.61%. Comparing base (c086795) to head (01ad551).
Report is 918 commits behind head on master.

Files with missing lines	Patch %	Lines
aiohttp/web_ws.py	71.42%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8501   +/-   ##
=======================================
  Coverage   97.61%   97.61%           
=======================================
  Files         107      107           
  Lines       33104    33104           
  Branches     3892     3892           
=======================================
  Hits        32314    32314           
  Misses        571      571           
  Partials      219      219           

Flag	Coverage Δ
CI-GHA	97.52% <85.71%> (ø)
OS-Linux	97.19% <85.71%> (ø)
OS-Windows	95.64% <ø> (ø)
OS-macOS	96.85% <85.71%> (ø)
Py-3.10.11	97.00% <85.71%> (ø)
Py-3.10.14	96.95% <85.71%> (ø)
Py-3.11.9	97.17% <85.71%> (ø)
Py-3.12.4	97.30% <85.71%> (ø)
Py-3.8.10	95.41% <ø> (ø)
Py-3.8.18	96.84% <85.71%> (ø)
Py-3.9.13	96.98% <85.71%> (ø)
Py-3.9.19	96.94% <85.71%> (ø)
Py-pypy7.3.16	96.51% <85.71%> (ø)
VM-macos	96.85% <85.71%> (ø)
VM-ubuntu	97.19% <85.71%> (ø)
VM-windows	95.64% <ø> (ø)

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[bdraco]

Thanks

[patchback]

Backport to 3.10: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.10/f4574887f394c921b262de00b3cfc2411f8f8aa8/pr-8501

Backported as #8502

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