fix(compiler): throw exception for missing file

Throw `IllegalArgumentException` when a file is not found, ensuring proper error handling and preventing null returns

Author: phodal

exts/devins-lang/src/main/kotlin/cc/unitmesh/devti/language/compiler/exec/FileInsCommand.kt

@@ -33,8 +33,7 @@ class FileInsCommand(private val myProject: Project, private val prop: String) :
 
         val contentsToByteArray = virtualFile?.contentsToByteArray()
         if (contentsToByteArray == null) {
-            AutoDevNotifications.warn(myProject, "File not found: $virtualFile")
-            throw IllegalArgumentException("File not found: $virtualFile")
+            AutoDevNotifications.warn(myProject, "File not found: $prop")
             return null
         }