E2e appium/add splash animation step

[SamuelSalas]

Development & PR Process

1. Follow MetaMask Mobile Coding Standards
2. Add release-xx label to identify the PR slated for a upcoming release (will be used in release discussion)
3. Add needs-dev-review label when work is completed
4. Add needs-qa label when dev review is completed
5. Add QA Passed label when QA has signed off

Description
In a previous pr, the waitForSplashAnimation() method was moved to a separated steps to prevent having duplicated code. So in this ticket i added the new step to the scenarios affected by this change.

Screenshots/Recordings

If applicable, add screenshots and/or recordings to visualize the before and after of your change

Issue

Progresses #???

Checklist

• There is a related GitHub issue
• Tests are included if applicable
• Any added code is fully documented

[SamuelSalas]

Browserstack test runs:

./wdio/features/Accounts/CreatingWalletAccount.feature
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/a61ceff40f9b6838856edb2c0359609bced2c840?auth_token=1a1470525eac3442727ac5a19aa1d599a7c6bf23a98781e999b4df7780d017f4

ImportingAccount.feature
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/5b9f26e6f0696fd86e592e6c1effa56617d38221?auth_token=a45b675356bf26f5c3d0d1d5cc1e04abb5093a78dea2dfe93bc6a52a60608f19

/wdio/features/LockResetWallet.feature
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/25a5dff85f3775b35b5c68cf885f56067d520617?auth_token=3a1adda6cebab73215d596e08bc39a9a31df94d42c5a0b408a8d82372575eb29

/wdio/features/ImportCustomToken.feature
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/5f0b85e04ae17f6df648806b9997d91b29f7596e?auth_token=2eed21728f7d92924a61da24c1cf9dd390b27ef9cd9ecc69952de8d01826c503

/wdio/features/AddressFlow.feature
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/bd7e3457330cccb02f6f966c0022249248c94e57?auth_token=5f694849a67fb533169a97287f13722f126e049fdf5088c5fa98a282a54e2039

/wdio/features/NetworkFlow.feature - failed
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/7347b7dab29a2155a3b43521bf1abeb22d3b2d0c?auth_token=3ae9946cff1f3278d38adb7cdb9dd66947eecb5f787b202a90b6cee3d1f4ed4f

/wdio/features/ExploringWizard.feature - failed
https://app-automate.browserstack.com/builds/af352c3cb4fc61986127b52d3b21c37a2213b608/sessions/fc31ed0b36d61e106564fa527f3d53d068437d05?auth_token=b8091dfd5f1498fd653f23f0ea49bed47b2cc76dca46cffd0bf67f734bd819a7