Include Version in the export name if required (#7656)

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

crates/component-macro/tests/codegen/multiversion/root.wit

@@ -3,5 +3,6 @@ package foo:bar;
 world foo {
   import my:dep/a@0.1.0;
   import my:dep/a@0.2.0;
+  export my:dep/a@0.1.0;
   export my:dep/a@0.2.0;
 }

crates/wit-bindgen/src/lib.rs

@@ -474,7 +474,7 @@ impl Wasmtime {
                         format!(
                             "{}_{}_{snake}",
                             pkgname.namespace.to_snake_case(),
-                            pkgname.name.to_snake_case()
+                            self.name_package_module(resolve, iface.package.unwrap())
                         ),
                     ),
                     None => (format!("exports::{snake}::{camel}"), snake.clone()),