test: cover plain and hyphenated namespace collisions

Signed-off-by: James Sturtevant <jsturtevant@gmail.com>

Author: jsturtevant

src/tests/rust_guests/witguest/bindgen-test-cases/deps/a-bc-plain/types.wit

@@ -0,0 +1,10 @@
+package a:bc;
+
+interface types {
+    resource thing;
+
+    record plain-bc-info {
+        label: string,
+    }
+    get-plain-bc-info: func() -> plain-bc-info;
+}

src/tests/rust_guests/witguest/bindgen-test-cases/world.wit

@@ -5,12 +5,14 @@ world bindgen-test-cases {
     import b:pkg/types;
     import c:pkg/types@1.0.0;
     import c:pkg/types@2.0.0;
+    import a:bc/types;
     import a:b-c/types;
     import a-b:c/types;
     import uses-a-pkg-resource;
     import uses-b-pkg-resource;
     import uses-c-pkg-v1-resource;
     import uses-c-pkg-v2-resource;
+    import uses-a-bc-plain-resource;
     import uses-a-bc-resource;
     import uses-ab-c-resource;
     export executor;
@@ -36,6 +38,11 @@ interface uses-c-pkg-v2-resource {
     use-thing: func(x: borrow<thing>);
 }
 
+interface uses-a-bc-plain-resource {
+    use a:bc/types.{thing};
+    use-thing: func(x: borrow<thing>);
+}
+
 interface uses-a-bc-resource {
     use a:b-c/types.{thing};
     use-thing: func(x: borrow<thing>);