Make confirmation message scroll

In case the dialog message in install/uninstall confirmation dialog is long, it
may get clipped if the device is in landscape mode, screen is small or
font is large. Ensure that the dialog message is scrollable

Bug: 316211161
Test: Manual. Follow repro steps in the bug
Change-Id: I244d98675d506cbf360698bcaa7e59f0245050d6