Update 2.1 branch from flerda

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Fix missing auto-scroll feature in RecyclerView when switching to multiselectview

# This is the commit message ankidroid#2:

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added test files for currentdeckid()

 mark test as flaky

Issue 19729

fix(deckpicker): Added contentDescription to sync and add card buttons

deprecation(libanki): prefer `defaultsForAdding()` over `current()`

Deprecates Notetypes.current() in favor of col.defaultsForAdding()

Fixes: 19650
Co-authored-by: David Allison <62114487+david-allison@users.noreply.github.com>

chore: log 'Activity with no Application' error

It's likely that there's another cause other than the backup manager

Diagnostics for issue 19050

style: fix dangling top-level KDocs

This breaks KtLint 1.8.0

> A dangling toplevel KDoc is not allowed (cannot be auto-corrected)

* modify `libs.versions.toml` to use `ktlint = '1.8.0'`
* ./gradlew ktLintFormat
* revert all changes
* manually fix warnings, searching for 'dangling'
* manually check fixes ensuring only top-level comments
 are processed

Issue 19614 - updating ktLint

docs(github): Explain workflows

Quality Checks can be linked to from other pages as an onboarding guide

https://github.com/ankidroid/Anki-Android/tree/main/.github/workflows/README.md#quality-checks

docs(deps): improve AndroidX lifecycle-process

* link changelogs
* rename to 'androidxLifecycleProcess'
* make location consistent with other libraries

Added in 7f7cd37

Disable "Scroll toolbar" if toolbar is not shown

In the note editor's overflow menu,
disable the "Scroll toolbar" option
if the toolbar (for HTML formatting) is not shown.

Add comprehensive tests for Card.currentDeckId()

- Test normal deck scenario (oDid=0 returns did)
- Test filtered deck scenario (oDid takes priority)
- Test precedence when both IDs are positive
- Test real-world filtered deck usage
- Test normal deck default behavior
- Test edge case where both IDs are same

Addresses @NeedsTest annotation on currentDeckId() method

Update Card.kt

Update CardTest.kt

chore: fix warnings in ExifUtil and UniqueArrayList

* Convert var to val in ExifUtil
* Fix KDoc references in UniqueArrayList

Issue: 13282
Co-authored-by: David Allison <62114487+david-allison@users.noreply.github.com>

Add comprehensive tests for Card.currentDeckId()

- Test normal deck scenario (oDid=0 returns did)
- Test filtered deck scenario (oDid takes priority)
- Test precedence when both IDs are positive
- Test real-world filtered deck usage
- Test normal deck default behavior
- Test edge case where both IDs are same

Addresses @NeedsTest annotation on currentDeckId() method

Update Card.kt

Update CardTest.kt

Update Card.kt

Update Card.kt

Update CardTest.kt

Update CardTest.kt

Update CardTest.kt

Update Card.kt

Update CardTest.kt

Update CardTest.kt

Update CardTest.kt

Update tests to verify functionality calling currentDeckId()

Update CardTest.kt

Update CardTest.kt

Update CardTest.kt

Update CardTest.kt

Update CardTest.kt

Revert "added test files for currentdeckid()"

This reverts commit 1b3060e.

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Update Card.kt
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Update CardTest.kt
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Update Card.kt
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Update CardTest.kt
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Revert "Update Card.kt & Cardtest.kt"

This reverts commit 5bc3121.

Test files in cardtest.kt & card.kt