[exporter/prometheusremotewrite] change feature gate to beta (#36606)

#### Description

Change `exporter.prometheusremotewriteexporter.deprecateCreatedMetric`
feature gate from Alpha to Beta

#### Link to tracking issue

#35003

---------

Co-authored-by: David Ashpole <[email protected]>

Author: perebaj

.chloggen/exporter_prometheusremotewriteexporter_deprecate-created-metric-alpha2beta.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: deprecation
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: exporter/prometheusremotewrite
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Change `exporter.prometheusremotewriteexporter.deprecateCreatedMetric` feature gate from Alpha to Beta version.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [35003]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: The `export_created_metric` configuration parameter is now ignored by default.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

pkg/translator/prometheusremotewrite/helper.go

@@ -44,7 +44,7 @@ const (
 
 var exportCreatedMetricGate = featuregate.GlobalRegistry().MustRegister(
 	"exporter.prometheusremotewriteexporter.deprecateCreatedMetric",
-	featuregate.StageAlpha,
+	featuregate.StageBeta,
 	featuregate.WithRegisterDescription("Feature gate used to control the deprecation of created metrics."),
 	featuregate.WithRegisterReferenceURL("https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/35003"),
 )