Avoid displaying the live-metrics icon if not enabled

[ildyria]

Add a flag to make sure we do not display the icon if the functionality is NOT enabled...

Backend Changes:

• Added a new property is_live_metrics_enabled to the InitConfig class to track whether live metrics are enabled. (app/Http/Resources/GalleryConfigs/InitConfig.php)
• Updated the set_supporter_properties method in InitConfig to initialize is_live_metrics_enabled based on the configuration value live_metrics_enabled and the is_se_enabled flag. (app/Http/Resources/GalleryConfigs/InitConfig.php)

Localization Changes:

• Added a preview_text field under the metrics section in language files to display a preview message for live metrics. This change was made across multiple language files, including but not limited to ar, cz, de, en, fr, ja, ru, and zh_CN. [1] [2] [3] [4] [5]

These changes ensure that the live metrics feature is properly integrated into the backend logic and is supported with localized text for a global audience.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.00%. Comparing base (312eb31) to head (535230a).

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