Revert "sysui: add LAUNCH_MEDIA_OUTPUT_DIALOG to manifest"

This reverts commit f201b6bf.

Reason for revert: The Media Shell app should be able to send intent LAUNCH_MEDIA_OUTPUT_DIALOG

Bug: 426370935
Test: With a local build.
Change-Id: I2f8359e3b20201c9a32c0a230e9c6456f04f72b6