[iOS] Fixed clear button tint in text field in search

https://jira.mail.ru/browse/MAPSME-13181

iphone/Maps/Images.xcassets/Search/ic_search_clear_14.imageset/Contents.json

@@ -0,0 +1,26 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "Clear.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Clear@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "filename" : "Clear@3x.png",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}

iphone/Maps/UI/Search/MWMSearchTextField.mm

@@ -43,6 +43,18 @@ NSTimeInterval constexpr kOnSearchCompletedDelay = 0.2;
                                                        NSForegroundColorAttributeName: self.tintColor}];
 }
 
+-(void)layoutSubviews
+{
+  [super layoutSubviews];
+  for (UIView* view in self.subviews) {
+    if ([view isKindOfClass:[UIButton class]]) {
+      UIButton* button = (UIButton*) view;
+      [button setImage:[UIImage imageNamed:@"ic_search_clear_14"] forState:UIControlStateNormal];
+      button.tintColor = self.tintColor;
+    }
+  }
+}
+
 #pragma mark - Properties
 
 - (void)setIsSearching:(BOOL)isSearching