[NT-228, NT-376] Cancel Pledge Error Handling

[ifbarrera]

📲 What

Adds error handling via the message banner for the cancel pledge flow. This PR also adds the missing accessibility label on the cancellation reason text field, and updates the disabled and highlighted colors on the "Yes, cancel it" button.

🤔 Why

To let users know when cancelling their pledge has failed.

🛠 How

• adds MessageBannerPresenting conformance to CancelPledgeViewController
• hooks the banner up to the cancelPledgeError output
• adds an accessibility label to the cancellationReasonTextField
• updates the .disabled and .highlighted colors on the redButtonStyle

👀 See

♿️ Accessibility

• The cancellation reason text field should read "Cancellation reason, Tell us why, optional" with voice over enabled

✅ Acceptance criteria

• Navigate to a backing for a project that was not created on staging (any backing really). Navigate to the cancel pledge screen and try to pledge by tapping "Yes, cancel it". The button should become disabled and you should see an error banner animate in.

[cdolm92]

Looking good, just have a minor suggestion and found something unusual going on with the Japanese strings translations.

[cdolm92]

Why are the Japanese strings in Spanish? 🤔

[ifbarrera]

Good question...

[cdolm92]

Can we get rid of the lens and do |> \.accessibilityLabel %~ { _ in Strings.Cancellation_reason() } and |> \.placeholder %~ { _ in Strings.Tell_us_why_optional() } here?

[cdolm92]

Here too. Something went wrong with the Japanese translations.

[cdolm92]

Thanks for doing this it's G2G!! 🛳🛳🛳