Stabilize the AlwaysRecord sampler. (#4934)

The `AlwaysRecord` sampler has been in our development since the
December 2025 release, and it has prototypes in the following languages:

* Java: open-telemetry/opentelemetry-java#7877
* Go: open-telemetry/opentelemetry-go#7714
* PHP: open-telemetry/opentelemetry-php#1834
* Javascript:
open-telemetry/opentelemetry-js#6168
* Python:
open-telemetry/opentelemetry-python#4823
* DotNet:
open-telemetry/opentelemetry-dotnet#6732 (got
closed but hopefully we bring it back)

Author: carlosalberto

CHANGELOG.md

@@ -11,6 +11,9 @@ release.
 
 ### Traces
 
+- Stabilize `AlwaysRecord` sampler.
+  ([#4934](https://github.com/open-telemetry/opentelemetry-specification/pull/4934))
+
 ### Metrics
 
 ### Logs

specification/trace/sdk.md

@@ -607,8 +607,6 @@ The following configuration properties should be available when creating the sam
 
 #### AlwaysRecord
 
-**Status**: [Development](../document-status.md)
-
 `AlwaysRecord` is a sampler decorator that ensures every span is passed to
 the `SpanProcessor`, even those that would normally be dropped. It does this
 by converting `DROP` decisions from the wrapped sampler into `RECORD_ONLY`