fix: Correct static layer.

Author: errnull

Source/SVGAPlayer.m

@@ -22,6 +22,7 @@ @interface SVGAPlayer ()
 @property (nonatomic, strong) NSArray<SVGAAudioLayer *> *audioLayers;
 @property (nonatomic, strong) CADisplayLink *displayLink;
 @property (nonatomic, assign) NSInteger currentFrame;
+@property (nonatomic, copy) NSArray *contentLayers;
 @property (nonatomic, copy) NSDictionary<NSString *, UIImage *> *dynamicObjects;
 @property (nonatomic, copy) NSDictionary<NSString *, NSAttributedString *> *dynamicTexts;
 @property (nonatomic, copy) NSDictionary<NSString *, SVGAPlayerDynamicDrawingBlock> *dynamicDrawings;
@@ -35,8 +36,6 @@ @interface SVGAPlayer ()
 
 @implementation SVGAPlayer
 
-static NSArray *_contentLayers;
-
 - (instancetype)initWithFrame:(CGRect)frame
 {
     self = [super initWithFrame:frame];