[BUG] The dnssd advertises VID and PID if extended announcement is enabled

[kkasperczyk-no]

Reproduction steps

The extended announcement feature, per spec, requires to not include VID and PID in the advertisement data, to keep the user privacy (5.4.2.3.1):

If a device opts to use Extended Announcement, it SHALL set both the PID and VID to 0 in the
announcement and SHALL elide any Extended Data. This is to preserve user privacy for scenarios
where a device may remain uncommissioned for extended periods.

This feature can be enabled for dnssd through the CHIP_DEVICE_CONFIG_EXT_ADVERTISING define, but the implementation only allows to use the bigger value of advertising duration, however it does not change the content of advertised data (excludes VID and PID).

The suggested solution could be to follow the BLE implementation that runs the timer and after 15 minutes it updated the advertised data content.

Bug prevalence

Always

GitHub hash of the SDK that was being used

a068855

Platform

core

Platform Version(s)

No response

Anything else?

No response