[tests] Fix for 'TestVue.testVuetemplate'

```
Failures:
  TestVue.testVueTemplate:178 Incorrect completion insertion ==> expected: <<template>
  <div>
    <only-start></only-start>
  </div>
</template>
<script>
export default {
  name: 'HelloWorld',
  props: {
    msg: String
  }
}
</script>
<style scoped>
h3 {
  margin: 40px 0 0;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>> but was: <<template>
  <div>
    <only-start><style
  </div>
</template>
<script>
export default {
  name: 'HelloWorld',
  props: {
    msg: String
  }
}
</script>
<style scoped>
h3 {
  margin: 40px 0 0;
}
ul {
  list-style-type: none;
  padding: 0;
}
li {
  display: inline-block;
  margin: 0 10px;
}
a {
  color: #42b983;
}
</style>>
```

org.eclipse.wildwebdeveloper.tests/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: Tests for WildWebDeveloper
 Bundle-SymbolicName: org.eclipse.wildwebdeveloper.tests;singleton:=true
-Bundle-Version: 1.0.14.qualifier
+Bundle-Version: 1.0.15.qualifier
 Bundle-Vendor: Eclipse Wild Web Developer
 Automatic-Module-Name: org.eclipse.wildwebdeveloper.tests
 Bundle-RequiredExecutionEnvironment: JavaSE-21

org.eclipse.wildwebdeveloper.tests/pom.xml

@@ -7,7 +7,7 @@
 		<version>1.0.0-SNAPSHOT</version>
 	</parent>
 	<packaging>eclipse-test-plugin</packaging>
-	<version>1.0.14-SNAPSHOT</version>
+	<version>1.0.15-SNAPSHOT</version>
 	<build>
 		<plugins>
 			<plugin>

org.eclipse.wildwebdeveloper.tests/src/org/eclipse/wildwebdeveloper/tests/TestVue.java

@@ -13,6 +13,7 @@
 package org.eclipse.wildwebdeveloper.tests;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.io.BufferedReader;
@@ -142,7 +143,8 @@ void testVueTemplate() throws Exception {
 		editor = (TextEditor) IDE.openEditor(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage(),
 				appComponentHTML);
 		IDocument document = editor.getDocumentProvider().getDocument(editor.getEditorInput());
-		String tag = "<only-start>";
+		String tagName = "only-start";
+		String tag = '<' + tagName + '>';
 		document.set(document.get().replace(tag, tag + "<"));
 		assertTrue(new DisplayHelper() {
 			@Override
@@ -174,7 +176,13 @@ protected boolean condition() {
 		int pos = document.get().indexOf(tag) + tag.length();
 		ICompletionProposal[] proposals = contentAssistProcessor.computeCompletionProposals(Utils.getViewer(editor),
 				pos + 1);
-		proposals[0].apply(document);
+
+		// Find closing tag proposal
+		ICompletionProposal closingTagProposal = Arrays.stream(proposals)
+				.filter(p -> p.getDisplayString().equals('/' + tagName)).findFirst().orElse(null);
+		assertNotNull(closingTagProposal, "Closing tag proposal not found for '" + tag + "'");
+
+		closingTagProposal.apply(document);
 		assertEquals(new String(componentFolder.getFile("HelloWorldCorrect.vue").getContents().readAllBytes()).trim(),
 				document.get().trim(), "Incorrect completion insertion");