Disables Gradle console output coloring in interactive mode

Using the option `org.gradle.console=plain` to disable all color and other rich output in the Gradle console output.

Closes gh-768

grace-shell/src/main/groovy/org/grails/cli/gradle/GradleUtil.groovy

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 the original author or authors.
+ * Copyright 2014-2024 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -39,9 +39,9 @@ import org.grails.cli.profile.ProjectContext
 /**
  * Utility methods for interacting with Gradle
  *
- * @since 3.0
  * @author Graeme Rocher
  * @author Lari Hotari
+ * @since 3.0
  */
 @CompileStatic
 class GradleUtil {
@@ -109,7 +109,7 @@ class GradleUtil {
 
     static LongRunningOperation setupConsoleOutput(ProjectContext context, LongRunningOperation operation) {
         GrailsConsole grailsConsole = context.console
-        operation.colorOutput = grailsConsole.ansiEnabled
+        operation.colorOutput = System.getProperty('org.gradle.console') != 'plain' ? grailsConsole.ansiEnabled : false
         operation.standardOutput = new GrailsConsolePrintStream(grailsConsole.out)
         operation.standardError = new GrailsConsoleErrorPrintStream(grailsConsole.err)
         operation