net: fix indexeddb backend bugs (#38744)

Fix a large number of backend issues that were masking everything else.
There probably is still more, but it'll take more integration/unit
testing to find it.

Testing: WPT
Fixes: #38743

---------

Signed-off-by: Ashwin Naren <arihant2math@gmail.com>

components/net/indexeddb/engines/sqlite/object_data_model.rs

@@ -6,6 +6,7 @@ use sea_query::Iden;
 
 #[derive(Iden)]
 pub enum Column {
+    #[iden = "object_data"]
     Table,
     ObjectStoreId,
     Key,