fix(refresher): prevent focus-related scroll jumps on refresh (#30636)

Issue number: resolves #

---------

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issue. -->

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## What is the current behavior?
<!-- Please describe the current behavior that you are modifying. -->

Currently, if you focus on something and then refresh with a refresher,
the browser will try to scroll to what's focused after refreshing. This
can be an unexpected and disrupting user experience.



https://github.com/user-attachments/assets/3ef5999d-d104-422a-a6a9-4f478912f48a


## What is the new behavior?
<!-- Please describe the behavior or changes that are being added by
this PR. -->

With these changes, we blur the active element to prevent the browser
from trying to scroll back to something off screen after refreshing.

Also, I did try to create regression tests for this, but playwright
actually doesn't currently seem to make it possible as far as I can tell
- that's actually what I spent most of my time on this issue trying to
do. Looks like the only way to trigger the refresher with playwright
uses mouse click events, which inherently blurs the active element. You
need to use cursor events for this to work, because cursor events do not
cause a blur on the active element.


https://github.com/user-attachments/assets/bd1a3bfc-9b48-4b3f-b8dc-6959eefc9107


## Does this introduce a breaking change?

- [ ] Yes
- [X] No

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## Other information

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screenshots of how the component looks before and after the change. -->

**Current dev build:**
```
8.7.3-dev.11755285796.12743331
```

Author: ShaneK

core/src/components/refresher/refresher.tsx

@@ -253,6 +253,15 @@ export class Refresher implements ComponentInterface {
             this.didRefresh = true;
             hapticImpact({ style: ImpactStyle.Light });
 
+            /**
+             * Clear focus from any active element to prevent scroll jumps
+             * when the refresh completes
+             */
+            const activeElement = document.activeElement as HTMLElement;
+            if (activeElement?.blur !== undefined) {
+              activeElement.blur();
+            }
+
             /**
              * Translate the content element otherwise when pointer is removed
              * from screen the scroll content will bounce back over the refresher
@@ -733,6 +742,16 @@ export class Refresher implements ComponentInterface {
     // place the content in a hangout position while it thinks
     this.setCss(this.pullMin, this.snapbackDuration, true, '');
 
+    /**
+     * Clear focus from any active element to prevent the browser
+     * from restoring focus and causing scroll jumps after refresh.
+     * This ensures the view stays at the top after refresh completes.
+     */
+    const activeElement = document.activeElement as HTMLElement;
+    if (activeElement?.blur !== undefined) {
+      activeElement.blur();
+    }
+
     // emit "refresh" because it was pulled down far enough
     // and they let go to begin refreshing
     this.ionRefresh.emit({