Apply consistent order to KotlinGradleBuildCustomizer #1559
Description
The BuildCustomizer which applies the java plugin (io.spring.initializr.generator.spring.build.gradle.GradleProjectGenerationConfiguration#javaPluginContributor) and the one for groovy (io.spring.initializr.generator.spring.build.gradle.GradleProjectGenerationConfiguration#javaPluginContributor) are ordered with value Ordered.HIGHEST_PRECEDENCE + 5.
The one for kotlin (io.spring.initializr.generator.spring.code.kotlin.KotlinGradleBuildCustomizer) is not.
We should make that consistent.