Fix have/have_no_element and update obscured test

lib/capybara/rspec/matchers.rb

@@ -77,7 +77,7 @@ def match_selector(...)
     #
     #   @see Capybara::Node::Matchers#matches_css?
 
-    %i[link button field select table].each do |selector|
+    %i[link button field select table element].each do |selector|
       define_method "have_#{selector}" do |locator = nil, **options, &optional_filter_block|
         Matchers::HaveSelector.new(selector, locator, **options, &optional_filter_block)
       end
@@ -166,7 +166,7 @@ def have_style(styles = nil, **options)
 
     %w[selector css xpath text title current_path link button
        field checked_field unchecked_field select table
-       sibling ancestor].each do |matcher_type|
+       sibling ancestor element].each do |matcher_type|
       define_method "have_no_#{matcher_type}" do |*args, **kw_args, &optional_filter_block|
         Matchers::NegatedMatcher.new(send("have_#{matcher_type}", *args, **kw_args, &optional_filter_block))
       end

lib/capybara/spec/views/with_html.erb

@@ -200,6 +200,8 @@ banana</textarea>
   </div>
 </details>
 
+<div style='height: 1000px'>spacer</div>
+
 <template id="template">
   <input />
 </template>

spec/rspec/shared_spec_matchers.rb

@@ -507,7 +507,7 @@
     let(:html) { '<img src="/img.jpg" alt="a JPEG"><img src="/img.png" alt="a PNG">' }
 
     it 'gives proper description' do
-      expect(have_element('img').description).to eq('have element "img"')
+      expect(have_element('img').description).to eq('have visible element "img"')
     end
 
     it 'passes if there is such a element' do