[Migrate simple payments] Payments > About TTP: update copy & align text

[jaclync]

Closes: #12608

Why

As Andrei suggested in p1714383172408719-slack-C06C3CZFHGD, we'd like to update the existing About Tap To Pay screen so that:

• The first point just mentions "Create an order"
• Align the main text and the footer

How

After a bit of debugging, the misalignment came from not setting the VStack's alignment to leading.

Testing instructions

Hand testing is optional, as it requires a certain device and we can verify in SwiftUI Previews

Prerequisite: the physical device is eligible for Tap To Pay - iPhone XS or later

• Log in to a store eligible for IPP
• Go to the Menu tab > Payments
• Tap About Tap To Pay --> the first point should say "Create an order", and the footer requirement text should align on the leading edge with the rest of the content

Screenshots

before	after

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• [x] I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[wpmobilebot]

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

	App Name	WooCommerce iOS
	Build Number	pr12609-79cecf3
	Version	18.4
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	79cecf31c6e4be6df12c00dcb5070c470ed3655f
	App Center Build	WooCommerce - Prototype Builds #8893

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