[Editor] Always give the focus to the ink editor when starting drawing (bug 1867588)

This way, when the editor is blurred, it can be committed and everything works fine.
It fixes issue #17373.

src/display/editor/ink.js

@@ -660,10 +660,7 @@ class InkEditor extends AnnotationEditor {
 
     event.preventDefault();
 
-    if (
-      event.pointerType !== "mouse" &&
-      !this.div.contains(document.activeElement)
-    ) {
+    if (!this.div.contains(document.activeElement)) {
       this.div.focus({
         preventScroll: true /* See issue #17327 */,
       });

test/integration/ink_editor_spec.mjs

@@ -15,6 +15,7 @@
 
 import {
   closePages,
+  getEditorSelector,
   getSelectedEditors,
   kbRedo,
   kbSelectAll,
@@ -256,4 +257,44 @@ describe("Ink Editor", () => {
       );
     });
   });
+
+  describe("Ink editor must be committed when blurred", () => {
+    let pages;
+
+    beforeAll(async () => {
+      pages = await loadAndWait("tracemonkey.pdf", ".annotationEditorLayer");
+    });
+
+    afterAll(async () => {
+      await closePages(pages);
+    });
+
+    it("must check that the ink editor is committed", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await page.click("#editorInk");
+          await page.waitForSelector(".annotationEditorLayer.inkEditing");
+
+          const rect = await page.$eval(".annotationEditorLayer", el => {
+            // With Chrome something is wrong when serializing a DomRect,
+            // hence we extract the values and just return them.
+            const { x, y } = el.getBoundingClientRect();
+            return { x, y };
+          });
+
+          const x = rect.x + 20;
+          const y = rect.y + 20;
+          const clickPromise = waitForPointerUp(page);
+          await page.mouse.move(x, y);
+          await page.mouse.down();
+          await page.mouse.move(x + 50, y + 50);
+          await page.mouse.up();
+          await clickPromise;
+
+          page.mouse.click(rect.x - 10, rect.y + 10);
+          await page.waitForSelector(`${getEditorSelector(0)}.disabled`);
+        })
+      );
+    });
+  });
 });