feat: show more relevant results for 'dependencies' dropdown (#8003)

- Fix issue dropdown breaking when currently selected issue is included in results.
- Add `sort` parameter to `/issues/search` API.
- Sort dropdown by relevance.
- Make priority_repo_id work again.
- Added E2E test.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8003
Reviewed-by: Shiny Nematoda <snematoda@noreply.codeberg.org>
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Danko Aleksejevs <danko@very.lv>
Co-committed-by: Danko Aleksejevs <danko@very.lv>

modules/indexer/issues/internal/tests/tests.go

@@ -742,6 +742,25 @@ var cases = []*testIndexerCase{
 			}
 		},
 	},
+	{
+		Name: "PriorityRepoID",
+		SearchOptions: &internal.SearchOptions{
+			IsPull:         optional.Some(false),
+			IsClosed:       optional.Some(false),
+			PriorityRepoID: optional.Some(int64(3)),
+			Paginator:      &db.ListOptionsAll,
+			SortBy:         internal.SortByScore,
+		},
+		Expected: func(t *testing.T, data map[int64]*internal.IndexerData, result *internal.SearchResult) {
+			for i, v := range result.Hits {
+				if i < 7 {
+					assert.Equal(t, int64(3), data[v.ID].RepoID)
+				} else {
+					assert.NotEqual(t, int64(3), data[v.ID].RepoID)
+				}
+			}
+		},
+	},
 }
 
 type testIndexerCase struct {