[UI Test] - Re-enable Create Order test

[jostnes]

Description

This PR re-enables the Create Order UI test that was temporarily disabled in #10035 (comment) because of screen changes and also as a pre-req for better test coverage in project lilypad.

A few changes have been made to the UI test for it to work after the UI changes:

1. Re-ordered add customer note as the first action - there were issues with scrolling on the test, and since we're testing the ability to create notes, this re-order does not reduce test coverage
2. Remove the following steps from the test: updateOrderStatus (since the test is creating a new order, this option isn't visible on screen) and addShipping (has been replaced by the custom amount field on this particular test because of the mock file used)
3. Created a new helper method, waitForElementToBeEnabled to better test conditions when the button is visible but not yet enabled

Testing instructions

Instrumented tests should be 🟢 in CI and should include previously skipped test e2eCreateOrderTest

• I have considered if this change warrants release notes and have added them to RELEASE-NOTES.txt if necessary. Use the "[Internal]" label for non-user-facing changes.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce Android by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce Android
	Flavor	Jalapeno
	Build Type	Debug
	Commit	fbccac8
	Direct Download	woocommerce-prototype-build-pr10660-fbccac8.apk

[tiagomar]

Thanks for working on it, @jostnes !

The changes look good, the test pass locally multiple times, and CI is 🟢.