Allow unset locale for Google authenticated user

src/khoj/database/migrations/0031_alter_googleuser_locale.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.2.10 on 2024-03-15 10:04
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("database", "0030_conversation_slug_and_title"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="googleuser",
+            name="locale",
+            field=models.CharField(blank=True, default=None, max_length=200, null=True),
+        ),
+    ]

src/khoj/database/models/__init__.py

@@ -43,7 +43,7 @@ class GoogleUser(models.Model):
     given_name = models.CharField(max_length=200, null=True, default=None, blank=True)
     family_name = models.CharField(max_length=200, null=True, default=None, blank=True)
     picture = models.CharField(max_length=200, null=True, default=None)
-    locale = models.CharField(max_length=200)
+    locale = models.CharField(max_length=200, null=True, default=None, blank=True)
 
     def __str__(self):
         return self.name