Please address the comments from this code review:

## Overall Comments
- The Tab key logic currently hides the popover on keydown then shows it again on keyup, which might cause a flicker or unexpected behavior—consider consolidating this into a single event or adjusting the timing to ensure a smooth UX.
- In dispose(), using EventHandler.off without a specific handler reference will remove all keydown/keyup listeners on the input; you should store each callback and pass it to off() to avoid unregistering unrelated handlers.
- You may need to call e.preventDefault() or check focus state when handling Tab to avoid interfering with native tab navigation and ensure the popover only toggles when appropriate.

## Individual Comments

### Comment 1
<location> `src/BootstrapBlazor/Components/DateTimePicker/DateTimePicker.razor.js:22` </location>
<code_context>
             }
         }
     });
+    const input = el.querySelector('.datetime-picker-input');
     const dateTimePicker = {
-        el,
</code_context>

<issue_to_address>
**issue:** Consider handling the case where input is not found.

Without a check for a missing input, attaching event handlers may fail if the selector does not match. Adding error handling will make the code more robust to DOM changes.
</issue_to_address>

### Comment 2
<location> `src/BootstrapBlazor/Components/DateTimePicker/DateTimePicker.razor.js:29` </location>
<code_context>
-    Data.set(id, dateTimePicker)
+    Data.set(id, dateTimePicker);
+
+    EventHandler.on(input, 'keydown', e => {
+        if (e.key === 'Tab' && popover.isShown()) {
+            popover.hide();
</code_context>

<issue_to_address>
**issue (complexity):** Consider replacing two EventHandler listeners with a single native keydown handler to simplify event management.

Here’s one way to collapse both listeners into a single native handler (no EventHandler wrapper) and still be able to clean it up on dispose:

```js
// init(...)
const input = el.querySelector('.datetime-picker-input');

function onKeydown(e) {
  switch (e.key) {
    case 'Escape':
      popover.hide();
      input.blur();
      break;
    case 'Tab':
      popover[popover.isShown() ? 'hide' : 'show']();
      break;
  }
}

input.addEventListener('keydown', onKeydown);

Data.set(id, { input, popover, onKeydown });
```

```js
// dispose(id)
const data = Data.get(id);
if (data) {
  const { input, popover, onKeydown } = data;
  input.removeEventListener('keydown', onKeydown);
  Popover.dispose(popover);
  Data.remove(id);
}
```

This:

- Uses a single `keydown` listener for both `Tab` and `Escape`  
- Eliminates the extra indirection of `EventHandler`  
- Stores the raw handler so you can clean it up properly in `dispose` without extra branching.
</issue_to_address>