Mark all devices as inactive when new active source is unknown

[Tey]

This PR makes sure all the devices known by libcec are marked as inactive when the active device changes and libcec does not manage the newly active device.

An example issue can be seen in the following log, where the active device is changed from 2000 (kodi) to 1000 (another device), then the TV if powered off and finally on. When the TV is powered on, the input source changes to 2000, because libcec answers to the active source request as it believes 2000 is still the active source.

Kodi CEC debug log

-- Changing input source on TV
2022-09-08 01:03:37.918 T:2600083648   DEBUG: CecLogMessage - >> 0f:80:20:00:10:00
2022-09-08 01:03:37.918 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): routing change (80)
2022-09-08 01:03:38.258 T:2600083648   DEBUG: CecLogMessage - >> 0f:86:10:00
2022-09-08 01:03:38.258 T:2600083648   DEBUG: CecLogMessage - >> TV (0) sets stream path to physical address 1000
2022-09-08 01:03:38.258 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): set stream path (86)
-- Powering TV off
2022-09-08 01:03:51.141 T:2600083648   DEBUG: CecLogMessage - >> 0f:36
2022-09-08 01:03:51.141 T:2600083648   DEBUG: CecLogMessage - TV (0): power status changed from 'on' to 'standby'
2022-09-08 01:03:51.141 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): standby (36)
-- Powering TV on
2022-09-08 01:03:58.389 T:2600083648   DEBUG: CecLogMessage - >> 0f:85
2022-09-08 01:03:58.389 T:2600083648   DEBUG: CecLogMessage - >> 0 requests active source
2022-09-08 01:03:58.390 T:2600083648   DEBUG: CecLogMessage - TV (0): power status changed from 'standby' to 'on'
2022-09-08 01:03:58.390 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> broadcast (F): active source (2000)
2022-09-08 01:03:58.390 T:2600083648   DEBUG: CecLogMessage - << 1f:82:20:00
2022-09-08 01:03:58.390 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): request active source (85)
2022-09-08 01:03:59.147 T:2600083648   DEBUG: CecLogMessage - >> 0f:80:10:00:20:00
2022-09-08 01:03:59.147 T:2600083648   DEBUG: CecLogMessage - Recorder 1 (1) was already marked as active source
2022-09-08 01:03:59.147 T:2600083648   DEBUG: CecLogMessage - >> source activated: Recorder 1 (1)
2022-09-08 01:03:59.147 T:2600083648   DEBUG: CecLogMessage - sending active source message for 'Recorder 1'
2022-09-08 01:03:59.148 T:2600083648   DEBUG: CecLogMessage - << powering on 'TV' (0)
2022-09-08 01:03:59.148 T:2600083648   DEBUG: CecLogMessage - << 10:04
2022-09-08 01:03:59.148 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): routing change (80)
2022-09-08 01:03:59.237 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> broadcast (F): active source (2000)
2022-09-08 01:03:59.238 T:2600083648   DEBUG: CecLogMessage - << 1f:82:20:00
2022-09-08 01:03:59.358 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> TV (0): menu state 'activated'
2022-09-08 01:03:59.358 T:2600083648   DEBUG: CecLogMessage - 'menu status' is marked as unsupported feature for device 'TV'
2022-09-08 01:03:59.444 T:2600083648   DEBUG: CecLogMessage - >> 0f:86:20:00
2022-09-08 01:03:59.445 T:2600083648   DEBUG: CecLogMessage - >> TV (0) sets stream path to physical address 2000
2022-09-08 01:03:59.445 T:2600083648   DEBUG: CecLogMessage - Recorder 1 (1) was already marked as active source
2022-09-08 01:03:59.445 T:2600083648   DEBUG: CecLogMessage - >> source activated: Recorder 1 (1)
2022-09-08 01:03:59.445 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> broadcast (F): active source (2000)
2022-09-08 01:03:59.446 T:2600083648   DEBUG: CecLogMessage - << 1f:82:20:00
2022-09-08 01:03:59.446 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): set stream path (86)
2022-09-08 01:04:00.001 T:2600083648   DEBUG: CecLogMessage - GetPhysicalAddress - physical address = 2000
2022-09-08 01:04:05.129 T:2600083648   DEBUG: CecLogMessage - >> 01:83
2022-09-08 01:04:05.130 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> broadcast (F): physical address 2000
2022-09-08 01:04:05.130 T:2600083648   DEBUG: CecLogMessage - << 1f:84:20:00:01
2022-09-08 01:04:05.130 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Recorder 1 (1): give physical address (83)
2022-09-08 01:04:06.565 T:2600083648   DEBUG: CecLogMessage - >> 0f:87:08:00:1f
2022-09-08 01:04:06.565 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> Broadcast (F): vendor id Pulse Eight (1582)
2022-09-08 01:04:06.566 T:2600083648   DEBUG: CecLogMessage - << 1f:87:00:15:82
2022-09-08 01:04:06.566 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Broadcast (F): device vendor id (87)
2022-09-08 01:04:06.764 T:2600083648   DEBUG: CecLogMessage - >> 01:8c
2022-09-08 01:04:06.764 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> TV (0): vendor id Pulse Eight (1582)
2022-09-08 01:04:06.764 T:2600083648   DEBUG: CecLogMessage - << 1f:87:00:15:82
2022-09-08 01:04:06.764 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Recorder 1 (1): give device vendor id (8C)
2022-09-08 01:04:06.962 T:2600083648   DEBUG: CecLogMessage - >> 01:46
2022-09-08 01:04:06.962 T:2600083648   DEBUG: CecLogMessage - << Recorder 1 (1) -> TV (0): OSD name 'Kodi'
2022-09-08 01:04:06.963 T:2600083648   DEBUG: CecLogMessage - << 10:47:4b:6f:64:69
2022-09-08 01:04:06.963 T:2600083648   DEBUG: CecLogMessage - >> TV (0) -> Recorder 1 (1): give osd name (46)