Restore shadowJar asset-import include filter in RAB build

The dependencies { include(project(":samples:packages:asset-import")) }
filter was accidentally removed from the shadowJar block, causing the fat
jar to bundle all transitive SDK dependencies instead of just asset-import.
This conflicted with the base container image jars and caused
ClassNotFoundException: com.atlan.pkg.rab.Importer at runtime.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: bladata1990 <balakrishnan.r@atlan.com>

Author: bladata1990

samples/packages/relational-assets-builder/build.gradle.kts

@@ -28,6 +28,9 @@ tasks {
         archiveClassifier.set("")
         archiveBaseName.set(jarName)
         destinationDirectory.set(file(jarPath))
+        dependencies {
+            include(project(":samples:packages:asset-import"))
+        }
         mergeServiceFiles()
         dependsOn(":package-toolkit:runtime:genPklConnectors")
     }