Read the file to force streaming.

Bug: 263449831
Test: atest
android.incrementalinstall.cts.IncrementalInstallTest#testAddSplitToExistingInstallAfterReboot
--iterations

Change-Id: I0219b1be3f699adcbb39e0279ee2943a98821da8
Merged-In: I0219b1be3f699adcbb39e0279ee2943a98821da8
2 files changed