Rename test tags to make it easier to follow

test/custom-elements/samples/no-shadow-dom-with-slots/AsImported.svelte

@@ -1,3 +1,3 @@
-<svelte:options tag="imported-element"/>
+<svelte:options tag="as-imported"/>
 
 <h2><slot/></h2>

test/custom-elements/samples/no-shadow-dom-with-slots/main.svelte

@@ -2,8 +2,8 @@
 
 <script>
 import './AsElement.svelte';
-import ImportedElement from './AsImported.svelte';
+import AsImported from './AsImported.svelte';
 </script>
 
 <as-element>Hello</as-element>
-<ImportedElement>world</ImportedElement>
+<AsImported>world</AsImported>

test/custom-elements/samples/no-shadow-dom-with-slots/test.js

@@ -6,7 +6,7 @@ export default function (target) {
 		target
 	});
 
-	assert.equal(target.innerHTML, '<custom-element><as-element><h1>Hello</h1></as-element><imported-element><h2>world</h2></imported-element></custom-element>');
+	assert.equal(target.innerHTML, '<custom-element><as-element><h1>Hello</h1></as-element><as-imported><h2>world</h2></as-imported></custom-element>');
 
 	const el = target.querySelector('custom-element');
 	assert.equal(el.innerText, "Hello world!");