Fix #5720 update the resolvedOffset correctly on image selection and drag

packages/lexical-playground/__tests__/e2e/Images.spec.mjs

@@ -740,4 +740,51 @@ test.describe('Images', () => {
       `,
     );
   });
+
+  test('Can resolve selection correctly when the image is clicked and dragged right', async ({
+    page,
+    isPlainText,
+    browserName,
+    isCollab,
+  }) => {
+    test.skip(isPlainText);
+    let leftFrame = page;
+    if (isCollab) {
+      leftFrame = await page.frame('left');
+    }
+    await focusEditor(page);
+
+    await page.keyboard.type('HelloWorld');
+    await insertSampleImage(page);
+    await click(page, '.editor-image img');
+
+    await leftFrame.locator('.editor-image img').hover();
+    await page.mouse.down();
+    await leftFrame.locator('.PlaygroundEditorTheme__paragraph').hover();
+    await page.mouse.up();
+    await waitForSelector(page, '.editor-image img');
+    await assertHTML(
+      page,
+      html`
+        <p
+          class="PlaygroundEditorTheme__paragraph PlaygroundEditorTheme__ltr"
+          dir="ltr">
+          <span data-lexical-text="true">HelloWorld</span>
+          <span
+            class="editor-image"
+            contenteditable="false"
+            data-lexical-decorator="true">
+            <div draggable="false">
+              <img
+                alt="Yellow flower in tilt shift lens"
+                draggable="false"
+                src="${SAMPLE_IMAGE_URL}"
+                style="height: inherit; max-width: 500px; width: inherit" />
+            </div>
+          </span>
+          <br />
+        </p>
+      `,
+    );
+  });
 });

packages/lexical/src/LexicalSelection.ts

@@ -1926,6 +1926,10 @@ function internalResolveSelectionPoint(
         return null;
       }
       if ($isElementNode(resolvedElement)) {
+        resolvedOffset = Math.min(
+          resolvedElement.getChildrenSize(),
+          resolvedOffset,
+        );
         let child = resolvedElement.getChildAtIndex(resolvedOffset);
         if (
           $isElementNode(child) &&