Update UX for transaction buttons/flow

[gravenp]

Description
Based on user feedback and mimicking existing patterns on high-usage apps, we want to make several updates to the transaction window buttons/flow to better guide the user through the multiple transactions.

Business Requirements

• Update the "Wrap to ETHx" button text to "Wrap ETH to ETHx"
• Separate the current combo button (Allow + Transaction Submission) into two dedicated buttons
• The "Allow" button should follow the current conditional logic to determine the required transfer and/or stream authorization transactions with corresponding text
  • After all required authorization transactions are complete (or none are required), display "ETHx use allowed" with a task complete icon (https://fonts.google.com/icons?icon.query=task+alt) and deactivate/grey out the button
  • If the user rejects the first or second transaction, return the button to active state and display the "Allow" button text per the conditional logic
• Add a third button that will serve as the land transaction submission button
  • Use transaction-specific button labeling established in feat: update button labels #249
  • The button should be greyed out & deactivated whenever the "Allow" button is active
  • The button should be active (green color) whenever the "Allow" button is inactive
  • Show the spinner while the transaction is pending
  • Return the button to active if the tranaction is cancelled or fails

Wireframe: https://excalidraw.com/#json=FmPm0Gpd8Ei3BcvPbZLRM,NtIGy-nS1LzUIHyjWT1jmQ