Looks like `describeEnum` was deprecated in the latest Flutter version
and substituted with `name`. This PR changes current usages of that to
fix the linter.

From what I've been able to figure out, this `name` property is
available since Dart 2.15, which is our minimum version so we should be
good

We forgot a `break` when calling this method, which caused it to fall to
the `default` case, resulting in the result being called twice, causing
a crash. This deals with #902

This merges latest `main` into `paywalls`

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: NachoSoto <NachoSoto@users.noreply.github.com>
Co-authored-by: RevenueCat Git Bot <72824662+RCGitBot@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

### New Features
* 📱 Initial support for cross-platform RevenueCat Paywalls 🐾 🧱 (#852)

#### Instructions:
- For Android, you need to change your `MainActivity` to subclass
`FlutterFragmentActivity` instead of `FlutterActivity`.
- Update `purchases-flutter` in your `pubspec.yaml`:
```yaml
dependencies:
  purchases_flutter: 6.6.0-beta.3
```

#### Usage:
```dart
await Purchases.presentPaywallIfNeeded("pro");
```

#### Limitations:

- Currently only full screen paywalls are supported
- There is no way to detect paywall events other than using
`addCustomerInfoUpdateListener`
- Android's `minSdkVersion` is temporarily increased from `19` to `24`
to support paywalls. This will be reverted in a future release as we
split `purchases_flutter` and `purchases_flutter_ui`

### Breaking changes from previous beta

- `PurchasesFlutterActivity` has been removed. Use
`FlutterFragmentActivity` provided by Flutter instead

### Fixes from previous beta
* Fix `presentPaywallIfNeeded` (#904) via Toni Rico (@tonidero)

### Other Changes
* Update paywalls latest main (#906) via Toni Rico (@tonidero)
* Update to use PHC PaywallHelpers instead of custom activity (#903) via
Toni Rico (@tonidero)
* Fix flutter analyze deprecation warnings (#872)

Updates PHC to `8.10.0-beta.8`

### New features
* 📱 Initial support for cross-platform RevenueCat Paywalls 🐾 🧱 (#852)

#### Instructions:
- For Android, you need to change your `MainActivity` to subclass
`FlutterFragmentActivity` instead of `FlutterActivity`. Also, the min
sdk version of the new package is `24`. Please make sure your app's
`android/build.gradle` minSdkVersion has that or a higher version.
- Add `purchases-ui-flutter` in your `pubspec.yaml`:
```yaml
dependencies:
  purchases_ui_flutter: 6.15.0-beta.4
```

#### Usage:
```dart
import 'package:purchases_ui_flutter/purchases_ui_flutter.dart';

await RevenueCatUI.presentPaywallIfNeeded("pro");
```

#### Limitations:
- Currently only full screen paywalls are supported
- There is no way to detect paywall events other than using
`addCustomerInfoUpdateListener`

#### Breaking changes from previous beta:
- Paywalls functionality has been extracted into a new dependency called
purchases_ui_flutter. Add purchases_ui_flutter to your pubspec.yaml.
Before this release, it was part of the main RevenueCat SDK
`purchases_flutter`.
- A new import is required to use this functionality: `import
'package:purchases_ui_flutter/purchases_ui_flutter.dart';`
- Usage has changed the class from `Purchases.presentPaywall` to
`RevenueCatUI.presentPaywall`.
- `presentPaywall` and `presentPaywallIfNeeded` now don't return a
result. To detect purchases, please use `Purchases.getCustomerInfo` from
the `purchases_flutter` SDK. A return value will be added in future
releases.

### Other Changes
* Fix pub score for `purchases-ui-flutter` (#924) via Toni Rico
(@tonidero)
* Update `paywalls` to latest `main` (#923) via Toni Rico (@tonidero)
* Rename `purchases_flutter_ui` to `purchases_ui_flutter` (#921) via
Toni Rico (@tonidero)
* Separate paywalls into a different package (#919) via Toni Rico
(@tonidero)
* Remove result from presentPaywall methods (#916) via Toni Rico
(@tonidero)
* Update to use PHC PaywallHelpers instead of custom activity (#903) via
Toni Rico (@tonidero)