Fix typo in LockSettingsService.getDecryptedPasswordsForAllTiedProfiles

This would have led to existing work profile password not being computed,
causing an untrusted credential reset of the work profile when clearing
device lock.

Bug: 65579699
Test: cts-tradefed run commandAndExit cts-dev -m CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.ManagedProfileTest#testResetPasswordTokenUsableAfterClearingLock
Change-Id: I19e47c511bde693537b40fb652cbdf98a66fb8c1