TvInput: Update active config on stream config change

When a connections stream configurations change, the generation ID is
updated and a new configuration is added. This new configuration would
have to be marked as the current active configuration when the
TvInputHal calls the callback in TvInputHardwareManager.

Bug: 353895284
Test: atest TvInputServiceTest
Flag: EXEMPT bugfix
Change-Id: Ide16d0226903f54359d0f5511586e734dd71c66c