Use built-in labeled content view instead of horizontal stacks where appropriate

[defagos]

Description

This PR replaces manual label layout using HStack, two labels and a spacer, with the native LabeledContent view. This not only ensures correct appearance on all devices but also makes the view itself correctly accessible via VoiceOver for free.

Changes made

Self-explanatory. Note that the line limit of 1 has been removed in the metrics view (URLs now appear in full).

Checklist

• APIs have been properly documented (if relevant).
• The documentation has been updated (if relevant).
• New unit tests have been written (if relevant).
• The demo has been updated (if relevant).