When navigator.globalPrivacyControl is true and no prior consent exists,
auto-reject all non-necessary cookies with action "GPC", skip showing
the banner, and display an "Opt-Out Preference Signal Honored" badge on
the settings button (CPRA compliance). GPC labels are hardcoded in the
SDK for en/fr/de/es. Users can still override via the preference panel.
Signed-off-by: Émile Ré <emile@getprobo.com>
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