Replay: Allow the user-defined minimum session duration before flushing

[bruno-garcia]

With this change:

• feat(replay): Do not capture replays < 5 seconds (GA) #8277

We attempt to reduce short-lived sessions (smaller than 5 seconds). It's possible in the event a tab is closed, that the SDK flushes shorter replays.

A user requested that sessions should be at least 10 seconds long before getting collected. This could be done in the form of a configuration. Consider a maximum value so we don't need to buffer too much data in memory due to misconfiguration.

[mydea]

What about: Make this configurable, default 5s, max 15s? E.g. sessionMinDurationSeconds or something like this?

[mydea]

Implemented in #8596