[improve][broker][PIP-195] Cut off snapshot segment according to maxIndexesPerBucketSnapshotSegment

[coderzc]

PIP: #16763

Motivation

currently, the tracker only cut off snapshot segments according to the time range, to prevent single snapshot segment oversize we should add the max number limitation for snapshot segment.

Modifications

• Cut off snapshot segment according to config delayedDeliveryMaxIndexesPerBucketSnapshotSegment.
• Remove unimplemented configuration delayedDeliverySharedIndexEnabled
• Improve variable types

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

Matching PR in forked repository

PR in forked repository:

[codelipenghui]

/pulsarbot run-failure-checks

[mattisonchao]

Please don't forget to add configuration to broker.conf and standalone.conf