Some case it is difficult to know the calling method uses a block or not with `send` on a general framework. So this patch stops showing unused block warning on `send`. example with test/unit: ```ruby require 'test/unit' class T < Test::Unit::TestCase def setup end def test_foo = nil end ``` => /home/ko1/ruby/install/master/lib/ruby/gems/3.4.0+0/gems/test-unit-3.6.2/lib/test/unit/fixture.rb:284: warning: the block passed to 'priority_setup' defined at /home/ko1/ruby/install/master/lib/ruby/gems/3.4.0+0/gems/test-unit-3.6.2/lib/test/unit/priority.rb:183 may be ignored because test/unit can call any setup method (`priority_setup` in this case) with a block. Maybe we can show the warning again when we provide a way to recognize the calling method uses a block or not.