[9.2] [ES|QL] Fixes the autocomplete of timeseries sources after comma (#241402)

src/platform/packages/shared/kbn-esql-ast/src/commands_registry/commands/timeseries/autocomplete.test.ts

@@ -66,6 +66,13 @@ describe('TS Autocomplete', () => {
       ]);
     });
 
+    test('can suggest timeseries after one already selected', async () => {
+      const suggestions = await suggest('TS timeseries_index,  ');
+      const labels = suggestions.map((s) => s.label);
+
+      expect(labels).toEqual(['timeseries_index_with_alias', 'time_series_index']);
+    });
+
     test('discriminates between indices and aliases', async () => {
       const suggestions = await suggest('TS ');
       const indices: string[] = suggestions

src/platform/packages/shared/kbn-esql-ast/src/commands_registry/commands/timeseries/autocomplete.ts

@@ -68,10 +68,12 @@ export async function autocomplete(
   // TS something/
   // TS something, /
   else if (indexes.length) {
-    const sources = context?.sources ?? [];
+    const timeSeriesSources =
+      context?.timeSeriesSources?.map(({ name }) => ({ name, hidden: false })) ?? [];
+
     const additionalSuggestions = await additionalSourcesSuggestions(
       innerText,
-      sources,
+      timeSeriesSources,
       indexes.map(({ name }) => name),
       []
     );