Slash auto redirects violate spec

[zrothberg]

https://datatracker.ietf.org/doc/html/rfc7231#section-6.4.7

relevant snippet " target resource resides temporarily under a different URI and the user agent MUST NOT change the request method"

starlette/starlette/routing.py

Lines 688 to 692 in beb8943

	if match != Match.NONE:
	redirect_url = URL(scope=redirect_scope)
	response = RedirectResponse(url=str(redirect_url))
	await response(scope, receive, send)
	return

Currently it auto redirects on partial matches should be switched to only redirect on full matches.