chore: Update version from 23.1 to 23.2.x

fix: resolve builder StackOverflow, activator negative refCount, bind…

…ing regression, and testing extensions (#4301)

## What's Changed

### Builder converter registration no longer causes StackOverflow
Calling `WithFallbackConverter`, `WithConverter`,
`WithSetMethodConverter`, or `WithConvertersFrom` on
`IReactiveUIBuilder` previously caused a `StackOverflowException` due to
infinite recursion. These methods now work correctly.

### ViewModelActivator no longer goes into a broken state on extra
Deactivate calls
If `Deactivate()` was called more times than `Activate()`, the internal
reference count would go negative, preventing future activations from
working. The activator now safely ignores extra deactivation calls.

### Two-way bindings work again with base types like System.Object
Two-way bindings between a view model property of a derived type (e.g.
`string`) and a view property of a base type (e.g. `object`) were
throwing `ArgumentException`. This is now permitted as expected.

### TestScheduler extensions (AdvanceByMs, AdvanceToMs, etc.) are
discoverable again
After adding the `ReactiveUI.Testing.Reactive` package, `AdvanceByMs`,
`AdvanceToMs`, `OnNextAt`, and related extensions are now available with
just `using ReactiveUI.Testing;` -- no additional namespace import
needed.

Fixes #4293
Fixes #4283
Fixes #4298
Fixes #4297

---

## Maintainer Notes

- **IReactiveUIBuilder.cs**: Added 9 converter method signatures
(`WithConverter` x4, `WithFallbackConverter` x2,
`WithSetMethodConverter` x2, `WithConvertersFrom` x1) to the interface.
These were previously only on the concrete `ReactiveUIBuilder` class,
causing the extension methods in `BuilderMixins.cs` to resolve back to
themselves instead of dispatching to the implementation.
- **ViewModelActivator.cs**: Replaced `Interlocked.Decrement` in
`Deactivate()` with a CAS (CompareExchange) loop that refuses to
decrement below zero. The `ignoreRefCount` path now explicitly resets to
0.
- **PropertyBinderImplementation.cs**: Changed the type assignability
check from `&&` (mutual) to `||` (one-directional). The existing
fallback conversion logic at lines 180-184 already handles
one-directional assignment.
- **TestSchedulerExtensions.cs**: Changed namespace from
`ReactiveUI.Testing.Reactive` to `ReactiveUI.Testing`. The
assembly/package name remains `ReactiveUI.Testing.Reactive` -- the move
to a separate package is intentional to keep `ReactiveUI.Testing` free
of the `Microsoft.Reactive.Testing` dependency.
- **Test updates**: Added new interface members to
`TestReactiveUIBuilder` mock in Blazor tests, removed now-unnecessary
`using ReactiveUI.Testing.Reactive` from scheduler tests.

Remove beta from version, update release workflow to eSigner + OIDC N…

…uGet + create-release

chore(deps): update dependency verify.tunit to 31.10.0 (#4281)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [Verify.TUnit](https://redirect.github.com/VerifyTests/Verify) |
`31.9.4` → `31.10.0` |
![age](https://developer.mend.io/api/mc/badges/age/nuget/Verify.TUnit/31.10.0?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/Verify.TUnit/31.9.4/31.10.0?slim=true)
|

---

### Release Notes

<details>
<summary>VerifyTests/Verify (Verify.TUnit)</summary>

###
[`v31.10.0`](https://redirect.github.com/VerifyTests/Verify/compare/31.9.4...31.10.0)

[Compare
Source](https://redirect.github.com/VerifyTests/Verify/compare/31.9.4...31.10.0)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/reactiveui/ReactiveUI).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi45Mi4xIiwidXBkYXRlZEluVmVyIjoiNDIuOTIuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiRGVwZW5kZW5jeSBNYW5hZ2VtZW50Il19-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

chore: Release the 23.1.0-beta

Bump version from 22.2 to 22.3.x

housekeeping: Release 22.2.x of ReactiveUI

Bump version from 22.0 to 22.1.x

Bump version from 21.0.x to 22.0.x

housekeeping: Update version to 21.0.x