fix: refine execution ID handling in error messages for SpotlessCheckMojo

- Updated the logic to check for execution IDs, ensuring that messages correctly suggest commands based on the presence of default execution IDs.
- Added a new test case to validate behavior when no explicit execution ID is provided, confirming that the output message is simplified accordingly.

Author: dpolivaevUnite

plugin-maven/src/main/java/com/diffplug/spotless/maven/SpotlessCheckMojo.java

@@ -111,7 +111,9 @@ protected void process(String name, Iterable<File> files, Formatter formatter, U
 
 		if (!problemFiles.isEmpty()) {
 			final String runToFixMessage;
-			if (executionId != null && !executionId.isEmpty() && !executionId.equals("default-cli")) {
+			if (executionId != null && !executionId.isEmpty()
+				&& !executionId.equals("default")
+				&& !executionId.startsWith("default-")) {
 				runToFixMessage = "Run 'mvn spotless:apply@" + executionId + "' to fix these violations.";
 			} else {
 				runToFixMessage = "Run 'mvn spotless:apply' to fix these violations.";

plugin-maven/src/test/java/com/diffplug/spotless/maven/SpotlessCheckMojoTest.java

@@ -68,6 +68,31 @@ void testSpotlessCheckBindingToVerifyPhase() throws Exception {
 		testSpotlessCheck(UNFORMATTED_FILE, "verify", "check");
 	}
 
+	@Test
+	void testSpotlessCheckWithSimplifiedConfiguration() throws Exception {
+		// Use configuration with default execution ID
+		writePom(
+				new String[]{
+						"<execution>",
+						"  <!-- No ID specified = default ID -->",
+						"  <phase>verify</phase>",
+						"  <goals>",
+						"    <goal>check</goal>",
+						"  </goals>",
+						"</execution>"},
+				new String[]{
+						"<java>",
+						"  <licenseHeader>",
+						"    <file>${basedir}/license.txt</file>",
+						"  </licenseHeader>",
+						"</java>"},
+				null,
+				null);
+
+		// Without explicit execution ID, we should get a simple message without @id
+		testSpotlessCheck(UNFORMATTED_FILE, "verify", true, "");
+	}
+
 	private void testSpotlessCheck(String fileName, String command, boolean expectError) throws Exception {
 		testSpotlessCheck(fileName, command, expectError, "");
 	}