Apply fixes from StyleCI · android-com-pl/flarum-lscache@2148fd1

Access to an undefined property Flarum\Discussion\Discussion::$is_approved.

Access to an undefined property Flarum\Discussion\Discussion::$is_approved.

Access to an undefined property Flarum\Discussion\Discussion::$tags.

Access to an undefined property V17Development\FlarumBlog\BlogMeta\BlogMeta::$discussion_id.

Access to an undefined property Flarum\Discussion\Discussion::$is_approved.

Using nullsafe property access on non-nullable type Flarum\Discussion\Discussion. Use -> instead.

Access to an undefined property Flarum\Post\Post::$is_approved.

Using nullsafe property access on non-nullable type Flarum\Post\Post. Use -> instead.

Call to an undefined method Illuminate\Database\Eloquent\Relations\Relation::pluck().

Process completed with exit code 1.

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