Revisit deprecation warning for loose keyword argument matching

[floehopper]

Does the deprecation warning for loose keyword argument matching still make sense?

• Is the wording still appropriate now that strict matching is the default?
• Does loose keyword matching even work in Ruby v4?
• Should this be a deprecation warning rather than just a warning? i.e. is it ever going to stop working?

See the following code:

mocha/lib/mocha/parameter_matchers/positional_or_keyword_hash.rb

Lines 68 to 74 in 50844e9

	def deprecation_warning(actual, expected)
	details1 = "Expectation #{expectation_definition} expected #{hash_type(expected)} (#{expected.mocha_inspect}),".squeeze(' ')
	details2 = "but received #{hash_type(actual)} (#{actual.mocha_inspect})."
	sentence1 = 'These will stop matching when strict keyword argument matching is enabled.'
	sentence2 = 'See the documentation for Mocha::Configuration#strict_keyword_argument_matching=.'
	Deprecation.warning([details1, details2, sentence1, sentence2].join(' '))
	end