fix: flaky test `Create BTC Account cannot create multiple BTC accoun…

…ts...` (#25861)

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## **Description**
The Create BTC Account test is flaky as after clicking `Create` for
creating a BTC account the popover remains some seconds visible, making
that the subsequent click is obscured by it.
We fix this by using the `clickElementAndWaitToDisappear` method, which
ensures that the popup is closed before proceeding.


```
driver] Called 'clickElement' with arguments [{"text":"Create","tag":"button"}]
[driver] Called 'delay' with arguments [500]
[driver] Called 'clickElement' with arguments ["[data-testid=\"account-menu-icon\"]"]
Failure on testcase: 'Create BTC Account cannot create multiple BTC accounts', for more information see the artifacts tab in CI

ElementClickInterceptedError: Element <button class="mm-box mm-text mm-button-base mm-button-base--size-sm mm-button-base--ellipsis multichain-account-picker mm-text--body-md-medium mm-text--ellipsis mm-box--padding-0 mm-box--padding-right-2 mm-box--padding-left-2 mm-box--display-inline-flex mm-box--gap-2 mm-box--justify-content-center mm-box--align-items-center mm-box--color-text-default mm-box--background-color-transparent mm-box--rounded-lg"> is not clickable at point (576,112) because another element <label class="mm-box mm-text mm-label mm-label--html-for mm-form-text-field__label mm-text--body-md mm-text--font-weight-medium mm-box--display-inline-flex mm-box--align-items-center mm-box--color-text-default"> obscures it


Executing testcase: 'Create BTC Account can cancel the removal of BTC acc
```

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## **Related issues**

Fixes: #25862

## **Manual testing steps**

1. Check ci

## **Screenshots/Recordings**

See artifacts, where the popup is still open


![image](https://github.com/user-attachments/assets/9f2a2d1b-58cb-49fc-9f99-45d12f0b5f01)



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## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
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as recordings and or screenshots.

test/e2e/accounts/common.ts

@@ -383,5 +383,8 @@ export async function createBtcAccount(driver: Driver) {
     text: messages.addNewBitcoinAccount.message,
     tag: 'button',
   });
-  await driver.clickElement({ text: 'Create', tag: 'button' });
+  await driver.clickElementAndWaitToDisappear({
+    text: 'Create',
+    tag: 'button',
+  });
 }