feat(python): non-experimental metrics options (#15367)

Remove setup requirements since the Python SDK no longer requires an explicit opt-in when initializing the SDK. Bump the minimum SDK version to 2.44.0. Reference only non-experimental options.

Author: alexander-alderman-webb

docs/platforms/python/metrics/index.mdx

@@ -17,10 +17,6 @@ With Sentry Metrics, you can send counters, gauges and distributions from your a
 
 <PlatformContent includePath="metrics/requirements" />
 
-## Setup
-
-<PlatformContent includePath="metrics/setup" />
-
 ## Usage
 
 <PlatformContent includePath="metrics/usage" />

platform-includes/metrics/options/python.mdx

@@ -16,10 +16,7 @@ def before_metric(metric: Metric, _hint: Hint) -> Optional[Metric]:
 
 sentry_sdk.init(
     dsn="___PUBLIC_DSN___",
-    _experiments={
-        "enable_metrics": True,
-        "before_send_metric": before_metric,
-    },
+    before_send_metric=before_metric,
 )
 ```
 
@@ -30,7 +27,8 @@ The metric dict has the following keys:
 - `name`: (`str`) The name of the metric.
 - `type`: (`str` - one of `counter`, `gauge`, `distribution`) The type of metric.
 - `value`: (`float`) The numeric value of the metric.
-- `unit`: (`int`) The unit of measurement for the metric value.
+- `unit`: (`Optional[str]`) The unit of measurement for the metric value.
 - `attributes`: (`dict[str, str | bool | float | int]`) Additional attributes to be sent with the metric.
 - `timestamp`: (`float`) Timestamp in seconds (epoch time) indicating when the metric was recorded.
 - `trace_id`: (`Optional[str]`) The trace ID of the trace this metric belongs to.
+- `span_id`: (`Optional[str]`) The span id of the span that was active when the metric was emitted.

platform-includes/metrics/requirements/python.mdx

@@ -1,4 +1,4 @@
-Metrics for Python are supported in Sentry Python SDK version `2.43.0` and above.
+Metrics for Python are supported in Sentry Python SDK version `2.44.0` and above.
 
 ```bash {tabTitle:pip}
 pip install "sentry-sdk"