Migrate non-boolean experimental flags in 3.6

[siyuanfoundation]

What would you like to be added?

For the 3.6 release, we would like to have the list of non-boolean --experimental flags migrated to flags without the --experimental prefix.

• experimental-corrupt-check-time
• experimental-compaction-batch-limit
• experimental-watch-progress-notify-interval
• experimental-warning-apply-duration
• experimental-bootstrap-defrag-threshold-megabytes
• experimental-warning-unary-request-duration
• experimental-max-learners
• experimental-snapshot-catch-up-entries
• experimental-compaction-sleep-interval
• experimental-downgrade-check-time
• experimental-set-member-localaddr

In 3.6, we would like to have both the flags with and without the --experimental prefix working. experimentalNonBoolFlagMigrationMap should be used to achieve that. #19053 is an example (without the feature gate part).

Why is this needed?

flag clean up for release 3.6

[siyuanfoundation]

@ahrtr @serathius Please double check the flag list and see if any flag needs to remain --experimental or missing any.

[siyuanfoundation]

/cc @gangli113

[gangli113]

/assign