fix: discovery enabled by default

[volodymyr-chekyrta]

Fixed discovery configuration to enable it by default for the Open edX app.

[openedx-webhooks]

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[volodymyr-chekyrta]

@saeedbashir @rnr Kindly review the changes made in this pull request. Thank you. Feel free to move the review from yourself to someone else.

[openedx-webhooks]

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