Deprecate withers in `2.x`

[ppkarwasz]

In the main branch, all withers (builder method following the with<Foo> pattern) have been replaced with setter methods for consistency and clarity.

To ensure a smooth upgrade path and better API consistency between 2.x and 3.x, we should introduce equivalent setter methods in the 2.x branch and mark the existing wither methods as deprecated. This will give users time to adapt before migrating to 3.x, where wither methods will no longer be available.

Proposed Action:

• Add set<foo> methods alongside existing with<foo> methods in 2.x.
• Mark all remaining with<foo> methods as deprecated in 2.x.

[jhl221123]

Hi @ppkarwasz,

I've reviewed this issue, its parent #1206, and the related discussion in PR #3372. I understand the context for improving API consistency and would like to take on this task.