Update env var to GRAILS_PUBLISH_RELEASE (#14126)

* build: set correct env var `GRAILS_PUBLISH_RELEASE`

* chore: cleanup

Author: matrei

.github/workflows/gradle.yml

@@ -100,7 +100,7 @@ jobs:
       - name: "📤 Publish Snapshot Artifacts"
         id: publish
         env:
-          GRADLE_PUBLISH_RELEASE: 'false'
+          GRAILS_PUBLISH_RELEASE: 'false'
           MAVEN_PUBLISH_URL: ${{ secrets.GRAILS_NEXUS_PUBLISH_SNAPSHOT_URL }}
           MAVEN_PUBLISH_USERNAME: ${{ secrets.NEXUS_USER }}
           MAVEN_PUBLISH_PASSWORD: ${{ secrets.NEXUS_PW  }}

gradle/publish-config.gradle

@@ -8,5 +8,5 @@ extensions.configure(GrailsPublishExtension) {
     it.title = findProperty('pomTitle') ?: 'Grails® framework'
     it.desc = findProperty('pomDescription') ?: 'Grails Web Application Framework'
     it.developers = findProperty('pomDevelopers') as Map<String,String> ?: [graemerocher: 'Graeme Rocher']
-    it.pomCustomization = findProperty('pomCustomization') as Closure ?: null
+    it.pomCustomization = findProperty('pomCustomization') as Closure
 }

grails-bom/build.gradle

@@ -16,8 +16,8 @@ def versions = new Properties()
 versions.load(new StringReader(new File("$projectDir.parentFile/gradle.properties").text))
 
 ext {
-    isReleaseBuild = System.getenv('GRADLE_PUBLISH_RELEASE') == 'true'
-    isPublishedExternal = System.getenv('NEXUS_PUBLISH_STAGING_PROFILE_ID') != null
+    isReleaseBuild = System.getenv('GRAILS_PUBLISH_RELEASE') == 'true'
+    isPublishedExternal = System.getenv().containsKey('NEXUS_PUBLISH_STAGING_PROFILE_ID')
 
     // When making changes in the dependencyVersions, remember to also update the Grails BOM Documentation:
     // https://docs.grails.org/snapshot/ref/Dependency%20Versions/Grails%20BOM.html