Fix invalid utf8 not being detected

- Rusqlite was returning a different error
- The sort field may also contain invalid utf8

rslib/src/error/db.rs

@@ -53,6 +53,15 @@ impl From<Error> for AnkiError {
                     info: reason.to_owned(),
                 };
             }
+        } else if let Error::FromSqlConversionFailure(_, _, err) = &err {
+            if let Some(_err) = err.downcast_ref::<Utf8Error>() {
+                return AnkiError::DbError {
+                    source: DbError {
+                        info: "".to_string(),
+                        kind: DbErrorKind::Utf8,
+                    },
+                };
+            }
         }
         AnkiError::DbError {
             source: DbError {

rslib/src/storage/note/mod.rs

@@ -150,7 +150,7 @@ impl super::SqliteStorage {
                     let fixed_flds: Vec<u8> = row.get(0)?;
                     let fixed_str = String::from_utf8_lossy(&fixed_flds);
                     self.db.execute(
-                        "update notes set flds = ? where id = ?",
+                        "update notes set flds = ?, sfld = '' where id = ?",
                         params![fixed_str, nid],
                     )
                 },