chore(frontend+infra): optimize build process and exclude SQLite workers from minification

- Updated Webpack config to exclude SQLite workers from parsing and Terser minification, fixing related errors and improving build speed.
- Adjusted Dockerfile to disable source maps for production builds, reducing build time and memory usage.
- Modified Gradle build configuration to respect the `noSourceMaps` flag during Docker builds.

frontend/shells/meldestelle-portal/build.gradle.kts

@@ -39,6 +39,11 @@ kotlin {
           KotlinWebpackConfig.Mode.PRODUCTION
         else
           KotlinWebpackConfig.Mode.DEVELOPMENT
+
+        // Source Maps Optimierung für Docker Builds
+        if (project.hasProperty("noSourceMaps")) {
+            sourceMaps = false
+        }
       }
 
       webpackTask {