test(react): re-enable picker tests (#28885)

Issue number: N/A

---------

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## What is the current behavior?
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The `IonPicker` tests in the React app were skipped due to a Stencil bug
that has since been resolved.

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

Tests re-enabled.

## 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. -->

packages/react/test/base/tests/e2e/specs/overlay-components/IonPicker.cy.ts

@@ -1,9 +1,4 @@
-/**
- * TODO: Skipping for now to avoid the CE build issue
- * where child components do not get registered.
- * Re-enable after this is resolved in Stencil 2.9.
- */
-describe.skip('IonPicker', () => {
+describe('IonPicker', () => {
   beforeEach(() => {
     cy.visit('/overlay-components/picker');
   });

packages/react/test/base/tests/e2e/specs/overlay-hooks/useIonPicker.cy.ts

@@ -1,10 +1,4 @@
-/**
- * TODO: Skipping for now to avoid the CE build issue
- * where child components do not get registered.
- * Re-enable after this is resolved in Stencil 2.9.
- */
-
-describe.skip('useIonPicker', () => {
+describe('useIonPicker', () => {
   beforeEach(() => {
     cy.visit('/overlay-hooks/picker');
   });