Tests: fix tx modal e2e test

[usame-algan]

What it solves

Fixes the tx-modal e2e test

How this PR fixes it

• The safe app fixture immediately sent a transaction to the communicator which sometimes made the test fail because the manifest wasn't fully fetched yet. This adds a small delay there
• Also removes the useSafeAppFromManifest hook inside AppFrame since we already use the hook in the parent so we can pass it as a prop instead

How to test it

• Safe apps should still work
• The tx-modal e2e test should not fail anymore

Checklist

• I've tested the branch on mobile 📱
• I've documented how it affects the analytics (if at all) 📊
• I've written a unit/e2e test for it (if applicable) 🧑‍💻

[github-actions]

Branch preview

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https://fix_tx_modals_e2e--walletweb.review-wallet-web.5afe.dev

[github-actions]

ESLint Summary View Full Report

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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}

[francovenica]

The Safe app test are not failing in the PR anymore, so it is ok.