Fix :runIde gradle command (#1423)

## Changes

Make sure `:runIde` properly copies `node` artefacts so it also works in
development mode.

## Test plan

N/A

build.gradle.kts

@@ -262,6 +262,11 @@ tasks {
       into(buildCodyDir)
     }
 
+    copy {
+      from(downloadNodeBinaries())
+      into(buildCodyDir)
+    }
+
     return buildCodyDir
   }
 
@@ -321,8 +326,6 @@ tasks {
       into("agent/")
     }
 
-    from(fileTree(downloadNodeBinaries())) { into("agent/") }
-
     doLast {
       // Assert that agent binaries are included in the plugin
       val pluginPath = buildPlugin.get().outputs.files.first()