depricate .current() and migrate to col.defaultsForAdding

[Nishthajain7]

Purpose / Description

Deprecate the NotetypeStorage.current() function and migrate all call sites to use defaultsForAdding()

Fixes

• Fixes deprecation(libanki): move to col.defaultsForAdding #19650

Approach

• Added @deprecated annotation to NotetypeStorage.current()
• Migrated all call sites to use defaultsForAdding()

How Has This Been Tested?

All existing tests pass without modification

Checklist

Please, go through these checks before submitting the PR.

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[xenonnn4w]

The failing test is: CollectionTest > test_noteAddDelete FAILED

[xenonnn4w]

Thanks for your Contribution, some test are failing; fix them up!

[Nishthajain7]

I've fixed them and all checks have passed

[david-allison]

There's already an open PR for this (please check before working on an issue):

• libAnki: prefer defaultsForAdding #19656

Both PRs need work, the one above has suggestions and is likely closer to completion, I'd propose closing this to aoid duplicating effrot.

[david-allison]

I force pushed to #19656 to close this, truly sorry about the duplicated effort!

• libAnki: prefer defaultsForAdding #19656