fix(img): fire didLoad in safari (#16571)

fixes #16557

core/src/components/img/img.tsx

@@ -47,19 +47,23 @@ export class Img implements ComponentInterface {
         // of the element we are observing
         // we can just use data[0]
         if (data[0].isIntersecting) {
-          this.loadSrc = this.src;
+          this.load();
           this.removeIO();
-          this.ionImgDidLoad.emit();
         }
       });
 
       this.io.observe(this.el);
     } else {
       // fall back to setTimeout for Safari and IE
-      setTimeout(() => this.loadSrc = this.src, 200);
+      setTimeout(() => this.load(), 200);
     }
   }
 
+  private load() {
+    this.loadSrc = this.src;
+    this.ionImgDidLoad.emit();
+  }
+
   private removeIO() {
     if (this.io) {
       this.io.disconnect();