🌊 Streams: Small bug fixes (#217309)

* Preview tables for enrichment and partitioning showed header actions
which were not actually taking effect (now disabled)
* Ingest pipeline was linking to "not found" flyout if data stream
doesn't have a default ingest pipeline
* Index pattern for discover link and histogram was built the wrong way
(shows child streams for classic streams instead of wired streams)

x-pack/platform/plugins/shared/streams_app/public/components/data_management/preview_table/index.tsx

@@ -36,6 +36,7 @@ export function PreviewTable({
     return columns.map((column) => ({
       id: column,
       displayAsText: column,
+      actions: false as false,
       initialWidth: columns.length > 10 ? 250 : undefined,
     }));
   }, [columns]);

x-pack/platform/plugins/shared/streams_app/public/components/data_management/stream_detail_management/ingest_pipeline_details.tsx

@@ -42,10 +42,14 @@ export function IngestPipelineDetails({
                 defaultMessage: 'Name',
               })}
             </EuiText>
-            <EuiLink onClick={() => onFlyoutOpen(ingestPipeline?.name || '')}>
-              {ingestPipeline ? ingestPipeline.name : '-'}
-              <ManagedBadge meta={ingestPipeline?._meta} />
-            </EuiLink>
+            {ingestPipeline ? (
+              <EuiLink onClick={() => onFlyoutOpen(ingestPipeline.name)}>
+                {ingestPipeline.name}
+                <ManagedBadge meta={ingestPipeline?._meta} />
+              </EuiLink>
+            ) : (
+              <EuiText size="s">-</EuiText>
+            )}
           </EuiFlexGroup>
         </EuiFlexGroup>
       </EuiFlexGroup>

x-pack/platform/plugins/shared/streams_app/public/util/hierarchy_helpers.ts

@@ -11,7 +11,7 @@ export function getIndexPatterns(stream: StreamDefinition | undefined) {
   if (!stream) {
     return undefined;
   }
-  if (!isUnwiredStreamDefinition(stream)) {
+  if (isUnwiredStreamDefinition(stream)) {
     return [stream.name];
   }
   const isRoot = stream.name.indexOf('.') === -1;