Make sure the ProtoLogTool includes all groups in the viewer config

We were only including groups that were being used in log messages the were processed, so any group that was added and either unused or used in unprocessed Kotlin code, would cause errors when trying to turn on logcat logging for it.

Bug: 373754057
Test: atest com.android.protolog.tool.ViewerConfigProtoBuilderTest
Flag: EXEMPT updating code that is used only while building and cannot use flags
Change-Id: I60b492b409d44bee62f5024eb2f4f84e2c649131