Fix testIncorrectContextUse_GetSystemService

Previous CL[1] use system service class name instead of
service name in IncorrectContextViolation error log, but
the test didn't apply the change.
This CL follows the change of CL[1].

[1]: 3d9fc0f924a156ac940a895c86474413982c7268

Test: atest StrictModeTest#testIncorrectContextUse_GetSystemService
fixes: 151756981
Change-Id: Ifb079299f67524bb303aa2ba4b1ac1ad98e57d6d