This cl tries to fix cts tests IncidentdTest

1. Disable BatteryType section which is device-specific
2. Make timeout longer since meminfo section timedout in test
3. make some negative values sint
4. varint can be 64 bits, there is a bug implicitly convert it to 32
which loses values.
5. Found another bug which failed to read 64 bits varint, create a
native test to make sure it works.

Bug: 77291057
Test: atest CtsIncidentHostTestCases:com.android.server.cts.IncidentdTest
Change-Id: I04cc730741f7901f37ac57a11af7777d57118a23