Don't WTF if getSystemService(VIRTUALIZATION_SERVICE) returns null

On devices without AVF support it is expected for the
Context.getSystemService(VIRTUALIZATION_SERVICE) to return null.

Bug: 261012673
Test: atest CtsMicrodroidDisabledTestCases
Change-Id: I4e0f0efe8e8a128dc79f22f39175a2cee7724251
Merged-In: I4e0f0efe8e8a128dc79f22f39175a2cee7724251
1 file changed