ClipboardService: Restore different method calls to AppOps to fix PG

Commit 34ffba62 'Limit instant app access
to clipboard' (AOSP Bug-ID: 34231507) has introduced the new method
'clipboardAccessAllowed', which replaces all AppOps calls. However, whilst
the previous coding made use of the methods checkOp, noteOp and
checkOpNoThrow, the new method only uses method 'checkOp'. Different from
'noteOp', the 'checkOp' call only performs a check without setting the
counter or initializing the Op.
As a consequence, ClipBoard access did not show up any longer in Lineage's
Privacy Guard, hence users couldn't control anymore the apps accordingly.

This change aims at restoring the former call behavior by extending the
'clipboardAccessAllowed' method with a parameter to specify the AppOp
calling method according to the former code, which fixes the Privacy Guard
issue.

Change-Id: I4db7b4f043eb39068cd7a6346a0eb645648cfada