fix: improve qr readability of alby payment integration

[reneaaron]

What does this PR do?

• Enlarges and adds some whitespace around the QR for better readability by QR scanners
• Rearranges some elements for better readability by humans

Mandatory Tasks (DO NOT REMOVE)

• I have self-reviewed the code (A decent size PR without self-review might be rejected).
• I have updated the developer docs in /docs if this PR makes changes that would require a documentation change. If N/A, write N/A here and check the checkbox.
• I confirm automated tests are in place that prove my fix is effective or that my feature works.

How should this be tested?

Book an event that uses the Alby payment integration.

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All committers have signed the CLA.

[github-actions]

Hey there and thank you for opening this pull request! 👋🏼

We require pull request titles to follow the Conventional Commits specification and it looks like your proposed title needs to be adjusted.

Details:

No release type found in pull request title "Fix/lightning qr code". Add a prefix to indicate what kind of release this pull request corresponds to. For reference, see https://www.conventionalcommits.org/

Available types:
 - feat: A new feature
 - fix: A bug fix
 - docs: Documentation only changes
 - style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
 - refactor: A code change that neither fixes a bug nor adds a feature
 - perf: A code change that improves performance
 - test: Adding missing tests or correcting existing tests
 - build: Changes that affect the build system or external dependencies (example scopes: gulp, broccoli, npm)
 - ci: Changes to our CI configuration files and scripts (example scopes: Travis, Circle, BrowserStack, SauceLabs)
 - chore: Other changes that don't modify src or test files
 - revert: Reverts a previous commit

[graphite-app]

Graphite Automations

"Add consumer team as reviewer" took an action on this PR • (12/19/24)

1 reviewer was added to this PR based on Keith Williams's automation.

"Add community label" took an action on this PR • (12/19/24)

1 label was added to this PR based on Keith Williams's automation.

"Add ready-for-e2e label" took an action on this PR • (12/20/24)

1 label was added to this PR based on Keith Williams's automation.

[github-actions]

E2E results are ready!

• Workflow #42052.1 latest results