webui: add support for jsonl/ndjson file diffing as text files (#8136)

This change follows the approach taken for other similar formats, allowing
newline-delimited JSON files to be viewed and diffed in the LakeFS UI.

Closes #8094

webui/src/lib/components/repository/ObjectsDiff.jsx

@@ -10,7 +10,7 @@ import {useStorageConfig} from "../../hooks/storageConfig";
 import {AppContext} from "../../hooks/appContext";
 
 const maxDiffSizeBytes = 120 << 10;
-const supportedReadableFormats = ["txt", "text", "csv", "tsv", "yaml", "yml", "json"];
+const supportedReadableFormats = ["txt", "text", "csv", "tsv", "yaml", "yml", "json", "jsonl", "ndjson"];
 
 export const ObjectsDiff = ({diffType, repoId, leftRef, rightRef, path}) => {
     const config = useStorageConfig();

webui/src/pages/repositories/repository/fileRenderers/index.tsx

@@ -141,6 +141,8 @@ export function guessType(contentType: string | null, fileExtension: string | nu
         case 'yaml':
         case 'yml':
         case 'json':
+        case 'jsonl':
+        case 'ndjson':
             return FileType.TEXT
     }
     if (guessLanguage(fileExtension, contentType))