fix: Handle non-categorical columns with colors + update deprecated AnnData API (#2758)

Yeah that makes sense! Mergingg

server/common/colors.py

@@ -228,6 +228,6 @@ def convert_anndata_category_colors_to_cxg_category_colors(data):
 
         # create the cellxgene color entry for this category
         cxg_colors[category_name] = dict(
-            zip(data.obs[category_name].cat.categories, [convert_color_to_hex_format(c) for c in data.uns[uns_key]])
+            zip(data.obs[category_name].astype('category').cat.categories, [convert_color_to_hex_format(c) for c in data.uns[uns_key]])
         )
     return cxg_colors

server/common/corpora.py

@@ -22,7 +22,7 @@ def corpora_get_versions_from_anndata(adata):
     """
 
     # per Corpora AnnData spec, this is a corpora file if the following is true
-    if "version" not in adata.uns_keys():
+    if "version" not in list(adata.uns.keys()):
         return None
     version = adata.uns["version"]
     if not isinstance(version, collections.abc.Mapping) or "corpora_schema_version" not in version: