fix(checkbox, toggle): fire ionFocus and ionBlur (#30733)

Issue number: internal

---------

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

`ionFocus` and `ionBlur` are not being emitted for checkbox and toggle. 

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

- Moved the `onFocus` and `onBlur` to `Host`
- Added tests for `onFocus`, `onBlur`, and `onChange`.
- Added a workaround on Playwright in order to trigger `ionBlur` since
Playwright browsers aren't acting like native browsers when it comes to
tabbing.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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  2. Update the BREAKING.md file with the breaking change.
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## Other information

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

Dev build: `8.7.7-dev.11761071592.1d1b804d`

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Co-authored-by: ionitron <hi@ionicframework.com>
Co-authored-by: Shane <shane@shanessite.net>

core/src/components/checkbox/checkbox.tsx

@@ -34,7 +34,6 @@ export class Checkbox implements ComponentInterface {
   private inputLabelId = `${this.inputId}-lbl`;
   private helperTextId = `${this.inputId}-helper-text`;
   private errorTextId = `${this.inputId}-error-text`;
-  private focusEl?: HTMLElement;
   private inheritedAttributes: Attributes = {};
 
   @Element() el!: HTMLIonCheckboxElement;
@@ -147,9 +146,7 @@ export class Checkbox implements ComponentInterface {
   /** @internal */
   @Method()
   async setFocus() {
-    if (this.focusEl) {
-      this.focusEl.focus();
-    }
+    this.el.focus();
   }
 
   /**
@@ -169,7 +166,6 @@ export class Checkbox implements ComponentInterface {
   private toggleChecked = (ev: Event) => {
     ev.preventDefault();
 
-    this.setFocus();
     this.setChecked(!this.checked);
     this.indeterminate = false;
   };
@@ -285,6 +281,9 @@ export class Checkbox implements ComponentInterface {
         aria-disabled={disabled ? 'true' : null}
         tabindex={disabled ? undefined : 0}
         onKeyDown={this.onKeyDown}
+        onFocus={this.onFocus}
+        onBlur={this.onBlur}
+        onClick={this.onClick}
         class={createColorClasses(color, {
           [mode]: true,
           'in-item': hostContext('ion-item', el),
@@ -296,7 +295,6 @@ export class Checkbox implements ComponentInterface {
           [`checkbox-alignment-${alignment}`]: alignment !== undefined,
           [`checkbox-label-placement-${labelPlacement}`]: true,
         })}
-        onClick={this.onClick}
       >
         <label class="checkbox-wrapper" htmlFor={inputId}>
           {/*
@@ -309,9 +307,6 @@ export class Checkbox implements ComponentInterface {
             disabled={disabled}
             id={inputId}
             onChange={this.toggleChecked}
-            onFocus={() => this.onFocus()}
-            onBlur={() => this.onBlur()}
-            ref={(focusEl) => (this.focusEl = focusEl)}
             required={required}
             {...inheritedAttributes}
           />