Moved out label "Suggested by AI" in BlazeCampaignCreationForm layout

[pmusolino]

Related to #12671

Description

This PR reverts the recent changes made to the BlazeCampaignCreationForm layout, specifically moving the "Suggested by AI" label and the edit ad button back to their original positions. This decision follows a discussion highlighting concerns about the label's placement within the Ad Preview section C03L1NF1EA3/p1727177421848799

Steps to reproduce

• Ensure that the visual layout in the form matches the original design specifications.

Testing information

Followed the same steps as Steps to reproduce.

Screenshots

Before	After

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• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

Reviewer (or Author, in the case of optional code reviews):

Please make sure these conditions are met before approving the PR, or request changes if the PR needs improvement:

• The PR is small and has a clear, single focus, or a valid explanation is provided in the description. If needed, please request to split it into smaller PRs.
• Ensure Adequate Unit Test Coverage: The changes are reasonably covered by unit tests or an explanation is provided in the PR description.
• Manual Testing: The author listed all the tests they ran, including smoke tests when needed (e.g., for refactorings). The reviewer confirmed that the PR works as expected on all devices (phone/tablet) and no regressions are added.

[wpmobilebot]

📲 You can test the changes from this Pull Request in WooCommerce iOS by scanning the QR code below to install the corresponding build.

	App Name	WooCommerce iOS
	Build Number	pr14074-72370a7
	Version	20.6
	Bundle ID	com.automattic.alpha.woocommerce
	Commit	72370a7
	App Center Build	WooCommerce - Prototype Builds #11060

Automatticians: You can use our internal self-serve MC tool to give yourself access to App Center if needed.

[itsmeichigo]

LGTM