Supply proper information display string for completion proposal

Signed-off-by: BoykoAlex <alex.boyko@broadcom.com>

Author: BoykoAlex

org.eclipse.lsp4e.jdt/src/org/eclipse/lsp4e/jdt/LSJavaProposal.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2022, 2024 VMware Inc. and others.
+ * Copyright (c) 2022, 2025 VMware Inc. and others.
  * This program and the accompanying materials are made
  * available under the terms of the Eclipse Public License 2.0
  * which is available at https://www.eclipse.org/legal/epl-2.0/
@@ -18,6 +18,7 @@
 
 import org.eclipse.core.runtime.FileLocator;
 import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.jdt.annotation.NonNull;
 import org.eclipse.jdt.annotation.Nullable;
 import org.eclipse.jdt.internal.codeassist.RelevanceConstants;
 import org.eclipse.jdt.internal.ui.text.java.AbstractJavaCompletionProposal;
@@ -130,9 +131,13 @@ public Object getAdditionalProposalInfo(IProgressMonitor monitor) {
 		HTMLPrinter.insertPageProlog(buffer, 0, fgRGB, bgRGB, getCSSStyles());
 		HTMLPrinter.addPageEpilog(buffer);
 		return new JavadocBrowserInformationControlInput(null, null, buffer.toString(), 0);
-
 	}
 
+	@Override
+	public @NonNull String getInformationDisplayString() {
+		return item.getLabel();
+	}
+
 	/**
 	 * Returns the style information for displaying HTML (Javadoc) content.
 	 * Copied from org.eclipse.jdt.internal.ui.text.java.AbstractJavaCompletionProposal.getCSSStyles()