Fix: double scroll bar in safe apps

[katspaugh]

What it solves

Resolves #2827

How this PR fixes it

The iframe was inline-block which created an extra 6px space below it, causing an unnecessary scrollbar on the body.

[github-actions]

Branch preview

✅ Deploy successful!

https://fix_scroll--walletweb.review-wallet-web.5afe.dev

[katspaugh]

This wasn't used anywhere.

[github-actions]

ESLint Summary View Full Report

Annotations are provided inline on the Files Changed tab. You can also see all annotations that were generated on the annotations page.

Type	Occurrences	Fixable
Errors	0	0
Warnings	0	0
Ignored	0	N/A

• Result: ✅ success
• Annotations: 0 total

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^{Report generated by eslint-plus-action}

[github-actions]

📦 Next.js Bundle Analysis for safe-wallet-web

This analysis was generated by the Next.js Bundle Analysis action. 🤖

🎉 Global Bundle Size Decreased

Page	Size (compressed)
global	1.39 MB (-19 B)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

Two Pages Changed Size

The following pages changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/apps/open	26.72 KB (🟡 +3 B)	1.42 MB
/home	23.63 KB (🟡 +3 B)	1.41 MB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	75.92%	9981/13147
🔴	Branches	50.16%	2033/4053
🔴	Functions	58.73%	1494/2544
🟡	Lines	77.49%	9018/11637

Test suite run success

1095 tests passing in 154 suites.

Report generated by 🧪jest coverage report action from 665aea2