Respect HTTP request method casing

[karenetheridge]

While weird, mixed-case or lower-cased methods are totally legal, and some symbols are permitted too.
The ABNF is here: https://www.rfc-editor.org/rfc/rfc9110#appendix-A

[karenetheridge]

I think I've got everything now.

I recognize that this is may be controversial, but even as a breaking change I think it's the right thing to do.

[kraih]

Yes, this does seem a little controversial to me, but we can put it up to a vote.

[Copilot]

Pull Request Overview

This PR modifies Mojolicious to respect HTTP request method casing instead of automatically converting methods to uppercase. The change ensures that mixed-case or lowercase HTTP methods (which are valid according to RFC 9110) are preserved throughout the framework.

• Remove automatic uppercase conversion of HTTP methods in routing and processing
• Update test cases to use proper casing or test lowercase method handling
• Preserve method casing in debug output and command-line tools

Reviewed Changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
lib/Mojolicious/Routes/Route.pm	Remove uppercase conversion in methods() function
lib/Mojolicious/Routes.pm	Preserve method casing in routing logic
lib/Mojo/UserAgent/Transactor.pm	Remove uppercase conversion in proxy and redirect handling
lib/Mojo/UserAgent.pm	Remove uppercase conversion in connection reuse logic
lib/Mojo/Transaction/HTTP.pm	Remove uppercase conversion in HEAD request handling
lib/Mojo/Message/Request.pm	Remove uppercase conversion in request line generation
lib/Test/Mojo.pm	Preserve method casing in test descriptions
lib/Mojolicious/Command/routes.pm	Remove uppercase conversion in routes command output
lib/Mojolicious/resources/templates/mojo/debug.html.ep	Remove uppercase conversion in debug template
t/mojolicious/routes.t	Update test methods to use uppercase for consistency
t/mojolicious/lite_app.t	Update test methods and add lowercase method test case
t/mojo/transactor.t	Update test descriptions and methods to reflect new behavior
t/mojo/request.t	Add test for method case preservation and update existing tests

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