fix: set async-profiler timeout for OTLP recordings

[arnabnandy7]

Description

Adds an async-profiler recording timeout for OTLP mode.

Previously, timeout was only included for JFR recordings. If scheduler ticks stalled while using OTLP, the in-memory recording could grow without a bound.

The OTLP start command now uses the existing upload-interval-derived timeout while continuing to omit the JFR-only file option.

Testing

./gradlew.bat :agent:test \
  --tests io.pyroscope.javaagent.AsyncProfilerDelegateCommandTest \
  --tests io.pyroscope.javaagent.AsyncProfilerDelegateTest

Result: BUILD SUCCESSFUL

Fixes #345.

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[arnabnandy7]

@korniltsev-grafanista @korniltsev to review

[korniltsev-grafanista]

nit: JFR command has no test, only otlp. worth adding.

[arnabnandy7]

nit: JFR command has no test, only otlp. worth adding.

I'll add an issue and create separate PR for this later.