[ADI][32/N] renaming an action constant

Renaming it to be consistent with existing user_action_required intents,
such as CONFIRM_INSTALL and CONFIRM_PRE_APPROVAL.

FLAG: android.content.pm.verification_service

BUG: 360129657
Test: manual with an installer app and make sure the dialogs are
prompted.
Test: CtsRootDeveloperVerificationPrivInstallerTarget36TestCases CtsRootDeveloperVerificationInstallerTarget36TestCases CtsRootDeveloperVerificationPrivInstallerTarget35TestCases CtsRootDeveloperVerificationInstallerTarget35TestCases CtsRootDeveloperVerificationVerifierTestCases

API-Coverage-Bug: 420966373

Change-Id: I258d74d05d6cbbb097fc8cd20ec24eb332df153a