Improve coverage for j.l.i.CallSite

Adds coverage for:

java.lang.invoke.MutableCallSite.MutableCallSite(java.lang.invoke.MethodHandle)
java.lang.invoke.VolatileCallSite.VolatileCallSite(java.lang.invoke.MethodHandle)

Bug: 182166070
Test: atest core-tests:libcore.java.lang.invoke.CallSitesTest
Merged-In: I0e1907c5dae419565325cb8234788a4f34ac5b63
Change-Id: I0e1907c5dae419565325cb8234788a4f34ac5b63
1 file changed