Easy Config-related cleanups

[dmlloyd]

Description
After #5387, there are several configuration constructs that can be cleaned up in core and extensions.

• Any @ConfigItem which has a primitive type like int or boolean that has an explicit default value of 0 or false can have the default value removed.
• Any @ConfigItem with a primitive wrapper type like Integer or Boolean with an explicit default value of 0 or false should be changed to use the primitive type instead and remove the default value.
• Any @ConfigItem of type Optional<Integer> can be changed to OptionalInt.
• Any @ConfigItem which is a List type that is always converted to an array using toArray can be changed to just be an array type instead.

[ShubhamRwt]

@dmlloyd Is this issue fixed now? I was planning to work on it.

[dmlloyd]

@ShubhamRwt - the issue is mostly done but the PR (#5489) is out of date and needs a rebase. The original contributor gave up in frustration (this was really our fault) but if you want to start with that commit, rebase it and bring it up to date (and add yourself as Co-authored-by) and submit a new PR, go ahead and do so. Thanks!

[ShubhamRwt]

Ok @dmlloyd. I will rebase it and send a new PR.

[machi1990]

Thanks @ShubhamRwt

[ShubhamRwt]

Hello @dmlloyd @machi1990 . The previous guy has made some unwanted changes due to which the build is failing. Should I create a new Pull request and make the only required changes?

[dmlloyd]

Go ahead. I'd recommend fixing just one problem per PR at a time; that will make it more likely to get merged quickly and hopefully avoid the troubles that the previous contributor encountered.

[ShubhamRwt]

Yes Sure. That would be great

[ShubhamRwt]

@machi1990 I went through the code base but seems like the second part is already resolved. Actually I was stuck with job work lately thats why this didn't got time for the rest over part but I will get it done and sorry for the delay.

[ShubhamRwt]

I will be proceeding with the 3rd pointer mentioned above tomorrow.

[machi1990]

@ShubhamRwt thanks for the update. No rush, and take your time.

[toniperezfer]

Hi. I would like to contribute to the project. It seems like there are two unresolved problems yet, right?

[adrianfiedler]

Hi @dmlloyd, @machi1990,
for third task I prepared a PR, could you please check?
#10440

[machi1990]

Hi @dmlloyd, @machi1990,
for third task I prepared a PR, could you please check?
#10440

Thanks for the PR @adrianfiedler I'll have a look later today.