style: Add Kotlin Lint to tests (#1515)

## Test Plan
> How do we know the code works?

Kt lint is enabled also for tests

build.gradle.kts

@@ -21,9 +21,7 @@ plugins {
 tasks {
     "lintKotlinMain"(LintTask::class) {
         exclude(
-            "**/*Generated.kt",
-            "**/*Test.kt",
-            "**/Test*.kt" // we can expand this list
+            "**/*Generated.kt" // we can expand this list
         )
     }
 }