Disable publishing block when media3 included in another build.

From https://github.com/androidx/media/pull/127/files

PiperOrigin-RevId: 485921271

RELEASENOTES.md

@@ -30,6 +30,8 @@ Release notes
         ([#10684](https://github.com/google/ExoPlayer/issues/10684)).
     *   Add `Player.getVideoSurfaceSize` that returns the size of the surface on
         which the video is rendered.
+*   Build:
+    *   Avoid publishing block when included in another gradle build.
 *   Downloads:
     *   Fix potential infinite loop in `ProgressiveDownloader` caused by
         simultaneous download and playback with the same `PriorityTaskManager`

publish.gradle

@@ -16,6 +16,7 @@ apply plugin: 'maven-publish'
 apply from: "$gradle.ext.androidxMediaSettingsDir/missing_aar_type_workaround.gradle"
 
 afterEvaluate {
+    if (rootProject.name == "media3") {
         publishing {
             repositories {
                 maven {
@@ -61,6 +62,7 @@ afterEvaluate {
             }
         }
     }
+}
 tasks.withType(PublishToMavenRepository) { it.dependsOn lint, test }
 
 task androidSourcesJar(type: Jar) {

settings.gradle

@@ -18,6 +18,8 @@ if (gradle.ext.has('androidxMediaModulePrefix')) {
     modulePrefix += gradle.ext.androidxMediaModulePrefix
 }
 
+rootProject.name = 'media3'
+
 include modulePrefix + 'demo'
 project(modulePrefix + 'demo').projectDir = new File(rootDir, 'demos/main')
 include modulePrefix + 'demo-cast'