Clean up for mWeb Download App Banner

[grgia]

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Feature Added here - #25418

Clean up points:

• Remove blue outline on mWeb
• Add AppIcon to Expensicons
• Change shouldStackButtons to use Flex order
• fix downloadAppModal key capitalization in en.js / es.js
• if the banner is dismissed it doesn't reappear on sign-out - only after refresh (only affects Android Chrome).

Upwork Automation - Do Not Edit

• Upwork Job URL: https://www.upwork.com/jobs/~0170b9f8d80a16cdaf
• Upwork Job ID: 1694645507289415680
• Last Price Increase: 2023-08-24

[melvin-bot]

Triggered auto assignment to @muttmuure (NewFeature), see https://stackoverflowteams.com/c/expensify/questions/14418#:~:text=BugZero%20process%20steps%20for%20feature%20requests for more details.

[melvin-bot]

Job added to Upwork: https://www.upwork.com/jobs/~0170b9f8d80a16cdaf

[melvin-bot]

Triggered auto assignment to Contributor Plus for review of internal employee PR - @mananjadhav (Internal)

[grgia]

@mananjadhav sorry for the ping, assigning @jjcoffee as they have context from the original PR!

[dylanexpensify]

@grgia mind if we get an update on this?

[grgia]

@dylanexpensify this is code clean up and lower priority. Do we have an issue for replacing this with smart banners?

[dylanexpensify]

Done