Add additional manifest attributes to handle purpose declaration app

compatibility.

Adding requiresPurposeTargetSdkVersion attribute under <permission> to
ensure only apps that target a specific SDK version or above require
purpose for a given permission. Also adding maxTargetSdkVersion on
<valid-purpose> for deprecating purposes in the future platform
releases.

Bug: 422817717
Test: m -j99
Flag: EXEMPT no public-staging.xml changes
Change-Id: Ie517d4c7f0177473aa30e7c8d9d4e315a701d946