feat(range): add focus styles to range (#30077)

Issue number: internal

---------

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## What is the new behavior?
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this PR. -->

- Add focus styles to ion-range when using Ionic theme.
- Add new focus test for ionic theme.
- Add new snapshots.

## 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. -->

- [Range ionic
focus](https://ionic-framework-asncg3yot-ionic1.vercel.app/src/components/range/test/states?ionic:theme=ionic)

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Co-authored-by: ionitron <[email protected]>
Co-authored-by: Maria Hutt <[email protected]>

Author: 3 people

core/src/components/range/range.ionic.scss

@@ -200,3 +200,10 @@
 :host(.in-item.range-label-placement-stacked) .native-wrapper {
   @include margin(null, null, globals.$ion-space-0, null);
 }
+
+// Range Focus
+// ----------------------------------------------------------------
+
+.range-knob-handle.ion-focused .range-knob {
+  @include globals.focused-state();
+}

core/src/components/range/test/basic/range.e2e.ts-snapshots/range-pin-ionic-md-ltr-light-Mobile-Chrome-linux.png

@@ -72,3 +72,27 @@ configs({ directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
     });
   });
 });
+
+configs({ modes: ['ionic-md'], directions: ['ltr'] }).forEach(({ title, screenshot, config }) => {
+  test.describe(title('range: states'), () => {
+    test('should render focus state', async ({ page }) => {
+      await page.setContent(
+        `
+        <ion-range>
+          <ion-icon name="volume-off" slot="start"></ion-icon>
+          <ion-icon name="volume-high" slot="end"></ion-icon>
+        </ion-range>
+      `,
+        config
+      );
+
+      const range = page.locator('ion-range');
+
+      const handle = range.locator('.range-knob-handle');
+
+      handle.focus();
+
+      await expect(range).toHaveScreenshot(screenshot(`range-focus`));
+    });
+  });
+});