Use proper media ID when changing path

Use the current media ID on the path stack to retrieve folder contents.

Bug: 77237565
Test: run host native test net-test-avrcp
Change-Id: I88d0862f76d18a071a8530cd31954447b4e180fc
(cherry picked from commit 3c25e8d1)
Merged-In: I88d0862f76d18a071a8530cd31954447b4e180fc