[Task]: EDIT_ADDON_PROPERTY (action 208) does not include locale information in change diffs

[mixedpuppy]

Description

Action 208 records name/summary changes as flat arrays of string values with no locale labels. When a multi-locale addon is edited, the removed and added arrays can have different lengths and unordered values, making it impossible to determine which locale each value belongs to or which old value maps to which new value.

Example from production data (last 90 days):

• {"removed": ["Note"], "added": ["VPN-ul", "VPN"]}
• {"removed": [], "added": ["Download", "YouTube"]}

This affects history investigations.

Acceptance Criteria

• Action 208 change diffs include the locale for each value so that per-locale changes can be distinguished.

┆Issue is synchronized with this Jira Task