Fix targetless check in layer (metalbear-co#2445)

* Targetless check fixed

* Changelog entry

Author: Razz4780

changelog.d/2444.fixed.md

@@ -0,0 +1 @@
+Fixed agent crashing when mirrord target is explicitly set to `targetless`.

mirrord/layer/src/setup.rs

@@ -7,6 +7,7 @@ use mirrord_config::{
         fs::FsConfig,
         network::{incoming::IncomingConfig, outgoing::OutgoingConfig},
     },
+    target::Target,
     util::VecOrSingle,
     LayerConfig,
 };
@@ -103,7 +104,12 @@ impl LayerSetup {
     }
 
     pub fn targetless(&self) -> bool {
-        self.config.target.path.is_none()
+        self.config
+            .target
+            .path
+            .as_ref()
+            .map(|path| matches!(path, Target::Targetless))
+            .unwrap_or(true)
     }
 
     pub fn sip_binaries(&self) -> Vec<String> {