Add dynamic type / accessibility size adjustments across widgets and views

[holgerkrupp]

Motivation

• Improve layout and readability when users enable larger accessibility text by honoring dynamic type sizes across multiple UI components.

Description

• Added @Environment(\.dynamicTypeSize) to widgets and several views and conditionally adjust behavior based on dynamicTypeSize.isAccessibilitySize (e.g. PlayNextQueueWidget, EpisodeRowView, PodcastRowView, BookmarkRowView, PodcastBrowseEpisodeRowView, watch views, etc.).
• Adapted row counts, header heights, and sizing in the play-next widget by changing listView(rowCount:) and headerHeight when in accessibility sizes.
• Replaced many fixed lineLimit calls with conditional limits and applied .fixedSize(horizontal: false, vertical: dynamicTypeSize.isAccessibilitySize) to allow multi-line expansion in accessibility sizes.
• Increased sizes and spacing for controls and buttons when accessibility sizes are active (for example in WatchPlayerView's control buttons and WatchCapsuleButtonStyle).

Testing

• Ran the project's unit test suite; all unit tests completed successfully.
• Verified SwiftUI previews and automated view snapshot checks (where available) to ensure layouts adapt for large accessibility sizes; previews rendered without errors.

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Codex Task