2474: Update test exclusions and add Kover instrumentation config

Removed outdated exclusion for test classes related to Magento actions. Added Kover instrumentation configuration to exclude Apache Velocity classes from coverage calculation, improving test coverage precision.

Author: VitaliyBoyko

build.gradle.kts

@@ -137,7 +137,6 @@ tasks {
     }
 
     test {
-        exclude("com/magento/idea/magento2plugin/actions/**") //https://github.com/magento/magento2-phpstorm-plugin/issues/2474
         useJUnitPlatform()
     }
 
@@ -239,3 +238,11 @@ fun getChangedFiles(): List<String> {
     // Return the list of touched files
     return files
 }
+
+kover {
+    currentProject {
+        instrumentation {
+            excludedClasses.add("org.apache.velocity.*")
+        }
+    }
+}