Disable failing test

Author: FlorianKroiss

org.eclipse.lsp4e.test/src/org/eclipse/lsp4e/test/format/FormatHandlerReadOnlyTest.java

@@ -40,10 +40,13 @@
 import org.eclipse.ui.handlers.IHandlerService;
 import org.eclipse.ui.texteditor.ITextEditor;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.DisabledOnOs;
+import org.junit.jupiter.api.condition.OS;
 
 public class FormatHandlerReadOnlyTest extends AbstractTestWithProject {
 
 	@Test
+	@DisabledOnOs(value = OS.LINUX, architectures = "aarch64", disabledReason = "Test fails consistently on Ubuntu 24.04 (ARM)")
 	public void testFormatOnReadOnlyFileAndMakeWritable() throws Exception {
 		// Mock formatting to prepend "//" at the start of each line
 		var edits = List.of( //