Revert "Change OS update deadline to 7PM local time" (#41965)

Reverts fleetdm/fleet#38810

ee/server/service/mdm.go

@@ -1314,7 +1314,7 @@ func (svc *Service) mdmAppleEditedAppleOSUpdates(ctx context.Context, teamID *ui
 	"Type": %q,
 	"Payload": {
 		"TargetOSVersion": %q,
-		"TargetLocalDateTime": "%sT19:00:00"
+		"TargetLocalDateTime": "%sT12:00:00"
 	}
 }`, softwareUpdateIdentifier, softwareUpdateType, updates.MinimumVersion.Value, updates.Deadline.Value))
 

frontend/pages/ManageControlsPage/OSUpdates/components/AppleOSTargetForm/AppleOSTargetForm.tsx

@@ -215,7 +215,7 @@ const AppleOSTargetForm = ({
         disabled={gitOpsModeEnabled}
         name="deadline"
         label="Deadline"
-        tooltip="The end user can't dismiss the OS update once they reach this deadline. Deadline is 19:00 (7PM), the host's local time."
+        tooltip="The end user can't dismiss the OS update once they reach this deadline. Deadline is 12:00 (Noon), the host's local time."
         helpText="YYYY-MM-DD format only (e.g., “2024-07-01”)."
         value={deadline}
         error={deadlineError}

server/service/integration_enterprise_test.go

@@ -3362,7 +3362,7 @@ func (s *integrationEnterpriseTestSuite) assertAppleOSUpdatesDeclaration(teamID
 	require.NoError(t, err)
 
 	require.Contains(t, string(decl.RawJSON), fmt.Sprintf(`"TargetOSVersion": "%s"`, expected.MinimumVersion.Value))
-	require.Contains(t, string(decl.RawJSON), fmt.Sprintf(`"TargetLocalDateTime": "%sT19:00:00"`, expected.Deadline.Value))
+	require.Contains(t, string(decl.RawJSON), fmt.Sprintf(`"TargetLocalDateTime": "%sT12:00:00"`, expected.Deadline.Value))
 }
 
 func (s *integrationEnterpriseTestSuite) TestAppleOSUpdatesTeamConfig() {