fix isProtected consistency for images and files + related consistency check

src/services/consistency_checks.js

@@ -357,6 +357,13 @@ async function findLogicIssues() {
 
             logFix(`Removed link ${linkId} because target note ${targetNoteId} is also deleted.`);
         });
+
+    await findIssues(`
+          SELECT noteId
+          FROM notes
+          JOIN note_contents USING(noteId)
+          WHERE notes.isDeleted = 0 AND notes.isProtected != note_contents.isProtected`,
+        ({noteId}) => `Note ${noteId} has inconsistent isProtected in notes and note_contents tables`);
 }
 
 async function runSyncRowChecks(entityName, key) {