fix(pages-components): unique key for address line separators

[hbendev]

When multiple separators were used on the same line, the keys (,) were not unique. Eg. the following example resulted in warnings:

<Address
  address={address}
  lines={[
    ["line1", "line2"],
    ["city", ",", "region", ",", "postalCode"],
  ]}
/>;

[changeset-bot]

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