[editor-core] gracefully handle any legacy v1 import agent (#36354)

GitOrigin-RevId: 186afa70c03e69b3288af66d85a0a3e431780d14

libraries/overleaf-editor-core/lib/schemas.js

@@ -166,9 +166,9 @@ const rawFileMetadata = z.union([
     main: z.boolean(),
     importedAt: z.iso.datetime().optional(),
   }),
-  // url import v1
+  // legacy v1 linked file
   z.strictObject({
-    agent: z.literal('url'),
+    agent: z.string(),
     agentDataId: z.number(),
     importedAt: z.iso.datetime().optional(),
   }),

libraries/overleaf-editor-core/test/unit/schemas.test.js

@@ -221,6 +221,14 @@ describe('schemas', function () {
       expect(result.success).to.equal(true)
     })
 
+    it('accepts a legacy v1 wlfile import', function () {
+      const result = rawFileMetadata.safeParse({
+        agent: 'wlfile',
+        agentDataId: 1337,
+      })
+      expect(result.success).to.equal(true)
+    })
+
     it('accepts a legacy v1 main flag with an importedAt timestamp', function () {
       const result = rawFileMetadata.safeParse({
         main: true,