Configurable maxReplayDuration for Android Session Replay

### Problem Statement

The Android Session Replay SDK currently has a fixed maximum session duration of 60 minutes with no way to configure a lower limit. The JavaScript SDK already supports a maxReplayDuration option, but no equivalent exists for Android.

Use cases where a configurable max duration would be helpful:

Reducing storage/resource usage by capping replays at a shorter duration (e.g. 15 or 30 minutes)
Limiting post-error recording to a shorter window when using onErrorSampleRate
Aligning Android replay behavior with the JavaScript SDK for consistency

### Solution Brainstorm

Add a maxReplayDuration option to SessionReplayOptions, similar to what is already available in the JavaScript SDK:

SentryAndroid.init(context) { options ->
options.sessionReplay.maxReplayDuration = 30 * 60 * 1000L // 30 minutes in ms
}
This would mirror the existing JavaScript SDK option:

replayIntegration({
maxReplayDuration: 30 * 60 * 1000, // 30 minutes in ms
})

Start with SessionReplayOptions and the Android Session Replay initialization shown through SentryAndroid.init; compare the existing JavaScript maxReplayDuration behavior. Trace where the fixed 60-minute limit is applied, then verify that configuring a lower duration works without changing the default behavior and run the relevant Android tests.

索引モデルが issue の本文から書いたものです。