Preconditions.checkNotNull on BaseRequestOptions.priority

**Glide Version**: 4.12.0

**Integration libraries**: OkHttp

**Device/Android Version**:
Xiaomi, Vivo, Oppo, Starting from OS 7 - 13

**Issue details / Repro steps / Use case background**:
Issue I found today in Firebase Crashlytics for several users, and I'm not able to reproduce it using my device. And I don't have this kind of crash previously, I notice users that got crashed using my Huawei APK build into their Android device, I also have tried to install the Huawei APK in my Samsung devices seems works fine

**Glide load line / `GlideModule` (if any) / list Adapter code (if any)**:
```java
Glide.with(activity)
.load(url)
.into(imageView)
```

**Stack trace / LogCat**:
```ruby
java.util.Objects.requireNonNull (Objects.java:245)
com.bumptech.glide.util.Preconditions.checkNotNull (Preconditions.java:29)
com.bumptech.glide.util.Preconditions.checkNotNull (Preconditions.java:23)
com.bumptech.glide.request.BaseRequestOptions.priority (BaseRequestOptions.java:235)
com.bumptech.glide.RequestManager. (RequestManager.java:62)
com.bumptech.glide.manager.RequestManagerRetriever$1.build (RequestManagerRetriever.java:528)
com.bumptech.glide.manager.RequestManagerRetriever.getApplicationManager (RequestManagerRetriever.java:110)
com.bumptech.glide.manager.RequestManagerRetriever.get (RequestManagerRetriever.java:140)
com.bumptech.glide.manager.RequestManagerRetriever.get (RequestManagerRetriever.java:146)
com.bumptech.glide.Glide.with (Glide.java:826)
```