Expressions: updating copy from experimental to beta. (#35149) (#35247)

(cherry picked from commit 456b356f21)

Co-authored-by: Marcus Andersson <marcus.andersson@grafana.com>

public/app/features/alerting/unified/components/rule-editor/QueryEditor.tsx

@@ -118,7 +118,7 @@ export class QueryEditor extends PureComponent<Props, State> {
           Query
         </Button>
         {config.expressionsEnabled && (
-          <Tooltip content="Experimental feature: queries could stop working in next version" placement="right">
+          <Tooltip content="Beta feature: queries could stop working in next version" placement="right">
             <Button
               type="button"
               icon="plus"

public/app/features/query/components/QueryGroup.tsx

@@ -344,7 +344,7 @@ export class QueryGroup extends PureComponent<Props, State> {
           </Button>
         )}
         {config.expressionsEnabled && this.isExpressionsSupported(dsSettings) && (
-          <Tooltip content="Experimental feature: queries could stop working in next version" placement="right">
+          <Tooltip content="Beta feature: queries could stop working in next version" placement="right">
             <Button
               icon="plus"
               onClick={this.onAddExpressionClick}