fix: add no-op for workspace/inlineValue/refresh to prevent UnsupportedOperationException (#1470)

Author: jorgsowa

src/main/java/com/redhat/devtools/lsp4ij/client/LanguageClientImpl.java

@@ -208,6 +208,11 @@ private void refreshSemanticTokensForAllOpenedFiles() {
                 .submit(AppExecutorUtil.getAppExecutorService());
     }
 
+    @Override
+    public CompletableFuture<Void> refreshInlineValues() {
+        return CompletableFuture.completedFuture(null);
+    }
+
     @Override
     public CompletableFuture<Void> refreshDiagnostics() {
         return CompletableFuture.runAsync(this::refreshDiagnosticsForAllOpenedFiles);