This feature request - though the title speaks of “master password re-prompt” - was actually about “Unlock with biometrics”. Which is implemented for a longer time.
(I’m not completely sure about ChromeOS though – but there is a separate feature request for that: Biometrics support for Chrome OS)
PS: I now changed the title, to make more clear that the request was about “biometric unlocking”. And that it was not about the dedicated “Master password re-prompt” feature that can protect vault item access. (before, the title was: “Fingerprint Support (All Platforms) - To do not re-prompt the master password all the time”)