Add asset image header on Stake and Earn views

[gemdev111]

Replace text section titles with asset image header (logo + name) on Stake and Earn views, matching the pattern used in RecipientScene.

• Extract reusable ListAssetHeaderView in PrimitivesComponents
• Add asset image header to StakeScene and EarnScene
• Deduplicate inline Section { } header: blocks in WalletConnector scenes
• Remove unused assetTitle properties

Close: #1831

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors the display of asset information in the Stake and Earn features, as well as in WalletConnector scenes, by introducing a new, reusable ListAssetHeaderView component. This change streamlines the UI code, promotes consistency in how asset headers are presented, and removes deprecated properties, leading to a cleaner and more maintainable codebase.

Highlights

• Standardized Asset Headers: Implemented a consistent asset image header (logo + name) across Stake and Earn views, aligning with existing patterns.
• Reusable Component Extraction: Extracted ListAssetHeaderView into PrimitivesComponents for improved reusability.
• UI Simplification: Replaced inline Section { } header: blocks in WalletConnector scenes with the new ListAssetHeaderView.
• Code Cleanup: Removed redundant assetTitle properties from view models.

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[gemini-code-assist]

Code Review

This pull request introduces a new ListAssetHeaderView component to standardize the display of asset headers within List views, replacing duplicated code in EarnScene, StakeScene, ConnectionProposalScene, and SignMessageScene. View models were refactored to expose AssetViewModel directly. The review suggests improving the encapsulation of ListAssetHeaderView by defining a local SubtitleLayout enum instead of exposing AssetPreviewView.SubtitleLayout in its public API.

[gemini-code-assist]

To improve encapsulation, consider defining a local SubtitleLayout enum for this view rather than exposing AssetPreviewView.SubtitleLayout in the public API. This decouples ListAssetHeaderView from the implementation details of AssetPreviewView.

You can then add the new enum and a private computed property to map to the AssetPreviewView.SubtitleLayout:

public enum SubtitleLayout {
    case horizontal
    case vertical
}

private var assetPreviewSubtitleLayout: AssetPreviewView<Model>.SubtitleLayout {
    switch subtitleLayout {
    case .horizontal: .horizontal
    case .vertical: .vertical
    }
}

Then, use assetPreviewSubtitleLayout in the body.

Suggested change

	private let subtitleLayout: AssetPreviewView<Model>.SubtitleLayout
	public init(model: Model, subtitleLayout: AssetPreviewView<Model>.SubtitleLayout = .horizontal) {
	self.model = model
	self.subtitleLayout = subtitleLayout
	}
	private let subtitleLayout: SubtitleLayout
	public init(model: Model, subtitleLayout: SubtitleLayout = .horizontal) {
	self.model = model
	self.subtitleLayout = subtitleLayout
	}