Force foreground priority for all tabs

Description

This policy controls whether background web content is forced to run at foreground priority. By default, the browser optimizes resources by deprioritizing content in background tabs. Enabling this policy overrides that behavior, causing background tabs to be scheduled the same way as the active tab. Note that forcing background content to run at foreground priority may slightly impact the responsiveness of the active tab. If this policy is set to Enabled, all web content runs at foreground priority regardless of its visibility state. If this policy is set to Disabled or not set, the browser determines priority based on standard heuristics (e.g., deprioritizing content that is not visible, not playing audio, not participating in video calls...).