What is the purpose of maven-assembly-plugin inside of ui.frontend?

### Platform and Version
archetypeVersion=27

### Reproduce Scenario (including but not limited to)
Generate project from the latest adobe archetype e.g.:
`mvn -B archetype:generate -D archetypeGroupId=com.adobe.aem -D archetypeArtifactId=aem-project-archetype -D archetypeVersion=27 -D aemVersion=6.5.7 -D appTitle='my app' -D appId=platform -D groupId=com.my.app -D includeExamples=n
`

### Actual Behaviour
The pom.xml file for ui.frontent module contains maven-assembly-plugin configuration. The plugin during maven build generates a zip package from the dist directory which doesn't really make sense as the dist folder is not even processed by aem-clientlib-generator yet.

### Expected Behaviour
What is the purpose of the package/maven-assembly-plugin ?

Start with the ui.frontend module's pom.xml and inspect the maven-assembly-plugin configuration, then trace how the dist directory is handled relative to aem-clientlib-generator. Compare the generated package with the archetype build command; the investigation is complete when the plugin's purpose and whether its configuration is still needed are documented.

Written by the indexing model from the issue text.