Fix cacheing of module type (#1393)

This fixes an issue where the `module` type is incorrectly cached.

pkl-core/src/test/files/LanguageSnippetTests/input/types/moduleType3.pkl

@@ -0,0 +1,34 @@
+open module Foo
+
+prop: String
+
+myself: module?
+
+class Bar extends module {
+  prop2: Int
+}
+
+class Baz extends module {
+  prop2: String
+}
+
+output {
+  value = new Dynamic {
+    bar = new Bar {
+      prop = "hi"
+      prop2 = 15
+      myself {
+        prop = "hi again"
+        prop2 = 15
+      }
+    }
+    baz = new Baz {
+      prop = "hi"
+      prop2 = "hihi"
+      myself {
+        prop = "hihihi"
+        prop2 = "hihihihi"
+      }
+    }
+  }
+}

pkl-core/src/test/files/LanguageSnippetTests/input/types/moduleType4.pkl

@@ -0,0 +1,18 @@
+open module TheModule
+
+mod: module? = Null(new module {})
+
+class Bar extends module {
+  num: Int
+}
+
+output {
+  value = new Dynamic {
+    bar = new Bar {
+      num = 5
+      mod {
+        num = 6
+      }
+    }
+  }
+}

pkl-core/src/test/files/LanguageSnippetTests/input/types/moduleType5.pkl

@@ -0,0 +1,28 @@
+open module TheModule
+
+mod: module? = Null(new module {})
+
+open class Bar extends module {
+  num: Int
+}
+
+open class Baz extends module {
+  num2: Int
+}
+
+output {
+  value = new Dynamic {
+    bar = new Bar {
+      num = 5
+      mod {
+        num = 5
+      }
+    }
+    baz = new Baz {
+      num2 = 5
+      mod {
+        num2 = 5
+      }
+    }
+  }
+}

pkl-core/src/test/files/LanguageSnippetTests/output/types/moduleType3.pcf

@@ -0,0 +1,18 @@
+bar {
+  prop = "hi"
+  myself {
+    prop = "hi again"
+    myself = null
+    prop2 = 15
+  }
+  prop2 = 15
+}
+baz {
+  prop = "hi"
+  myself {
+    prop = "hihihi"
+    myself = null
+    prop2 = "hihihihi"
+  }
+  prop2 = "hihi"
+}

pkl-core/src/test/files/LanguageSnippetTests/output/types/moduleType4.pcf

@@ -0,0 +1,7 @@
+bar {
+  mod {
+    mod = null
+    num = 6
+  }
+  num = 5
+}

pkl-core/src/test/files/LanguageSnippetTests/output/types/moduleType5.pcf

@@ -0,0 +1,14 @@
+bar {
+  mod {
+    mod = null
+    num = 5
+  }
+  num = 5
+}
+baz {
+  mod {
+    mod = null
+    num2 = 5
+  }
+  num2 = 5
+}