fix(bundler/wix): use product name to generate `UpgradeCode` for MSI (#10967)

The upgrade code generation was changed due to an accidental regression in #9375. Previously `UpgradeCode` was calculated using the main binary name which was `<product_name>.exe`, but #9375 changed the default main binary name to `<cargo-crate-name>.exe` and thus a different UpgradeCode was generetad.

This PR reverts this change to use product name for `UpgradeCode` generation.

.changes/wix-upgrade-code-regression.md

@@ -0,0 +1,5 @@
+---
+"tauri-bundler": "patch:bug"
+---
+
+Fix generated `UpgradeCode` for MSI not matching MSI installers created with tauri-bundler@v1.

crates/tauri-bundler/src/bundle/windows/msi/wix.rs

@@ -524,7 +524,7 @@ pub fn build_wix_app_installer(
   data.insert("manufacturer", to_json(manufacturer));
   let upgrade_code = Uuid::new_v5(
     &Uuid::NAMESPACE_DNS,
-    format!("{}.app.x64", &settings.main_binary_name()).as_bytes(),
+    format!("{}.exe.app.x64", &settings.product_name()).as_bytes(),
   )
   .to_string();