Fix column access during gene search

Author: naglepuff

nmdc_server/filters.py

@@ -303,12 +303,12 @@ def join(self, target_table: Table, query: Query) -> Query:
         return (
             query.join(
                 association_table,
-                association_table.data_generation_id == models.OmicsProcessing.id,  # type: ignore
+                association_table.c.data_generation_id == models.OmicsProcessing.id,
             )
             .join(
                 models.MetagenomeAnnotation,
                 models.MetagenomeAnnotation.id
-                == association_table.metagenome_annotation_id,  # type: ignore
+                == association_table.c.metagenome_annotation_id,
             )
             .join(
                 models.MGAGeneFunctionAggregation,
@@ -360,12 +360,12 @@ def join(self, target_table: Table, query: Query) -> Query:
         return (
             query.join(
                 association_table,
-                association_table.data_generation_id == models.OmicsProcessing.id,  # type: ignore
+                association_table.c.data_generation_id == models.OmicsProcessing.id,
             )
             .join(
                 models.MetaproteomicAnalysis,
                 models.MetaproteomicAnalysis.id
-                == association_table.metaproteomic_analysis_id,  # type: ignore
+                == association_table.c.metaproteomic_analysis_id,
             )
             .join(
                 models.MetaPGeneFunctionAggregation,
@@ -400,12 +400,12 @@ def join(self, target_table: Table, query: Query) -> Query:
         return (
             query.join(
                 association_table,
-                association_table.data_generation_id == models.OmicsProcessing.id,  # type: ignore
+                association_table.c.data_generation_id == models.OmicsProcessing.id,
             )
             .join(
                 models.MetatranscriptomeAnnotation,
                 models.MetatranscriptomeAnnotation.id
-                == association_table.metatranscriptome_annotation_id,  # type: ignore
+                == association_table.c.metatranscriptome_annotation_id,
             )
             .join(
                 models.MetaTGeneFunctionAggregation,