image [nfc]: Rename ImageanimationMode.resolve to shouldAnimate

As suggested by Greg:
  #1987 (comment)

Author: chrisbobbe

lib/widgets/emoji.dart

@@ -214,7 +214,7 @@ class ImageEmojiWidget extends StatelessWidget {
   Widget build(BuildContext context) {
     final size = textScaler.scale(this.size);
 
-    final resolvedUrl = animationMode.resolve(context)
+    final resolvedUrl = animationMode.shouldAnimate(context)
       ? emojiDisplay.resolvedUrl
       : (emojiDisplay.resolvedStillUrl ?? emojiDisplay.resolvedUrl);
 

lib/widgets/image.dart

@@ -111,7 +111,7 @@ class RealmContentNetworkImage extends StatelessWidget {
 
 /// Whether to show an animated image in its still or animated version.
 ///
-/// Use [resolve] to evaluate this for the given [BuildContext],
+/// Use [shouldAnimate] to evaluate this for the given [BuildContext],
 /// which reads device-setting data for [animateConditionally].
 enum ImageAnimationMode {
   /// Always show the animated version.
@@ -126,7 +126,7 @@ enum ImageAnimationMode {
   ;
 
   /// True if the image should be animated, false if it should be still.
-  bool resolve(BuildContext context) {
+  bool shouldAnimate(BuildContext context) {
     switch (this) {
       case animateAlways: return true;
       case animateNever: return false;