[GraphQL] Leverage objects_version table.

## Description

Use the `objects_version` table to speed up point look-ups (via data
loaders) for historical objects (ID + version), and dynamic
fields (object look-up bounding version by parent ID).

With this change, the restriction of accessing dynamic fields only
within the available range is dropped.

## Test plan

```
sui$ cargo nextest run -p sui-graphql-rpc
sui$ cargo nextest run -p sui-graphql-e2e-tests --features pg_integration.
```

Perform a query that involves fetching a large number of dynamic
fields, which should now be fast. The following example, fetching
dynamic fields on a deepbook pool loads 50 dynamic fields in about 5s
from cold (which also requires loading packages for resolution), and
then 2s from there:

```
query {
  owner(
    address: "0x029170bfa0a1677054263424fe4f9960c7cf05d359f6241333994c8830772bdb"
  ) {
    dynamicFields {
      pageInfo {
        hasNextPage
        endCursor
      }
      nodes {
        name {
          type {
            repr
          }
          json
        }
        value {
          ... on MoveValue {
            type {
              repr
            }
            json
          }
          ... on MoveObject {
            contents {
              json
              type {
                repr
              }
            }
          }
        }
      }
    }
  }
}
```

crates/sui-graphql-e2e-tests/tests/consistency/dynamic_fields/dynamic_fields.exp

@@ -831,7 +831,14 @@ Response: {
                   "repr": "u64"
                 }
               },
-              "value": null
+              "value": {
+                "contents": {
+                  "json": {
+                    "id": "0x844185d7b145f503838a1d509845a40ee249534f723dd2f003d9efdfc581000d",
+                    "count": "1"
+                  }
+                }
+              }
             }
           }
         ]
@@ -892,7 +899,14 @@ Response: {
                   "repr": "u64"
                 }
               },
-              "value": null
+              "value": {
+                "contents": {
+                  "json": {
+                    "id": "0x844185d7b145f503838a1d509845a40ee249534f723dd2f003d9efdfc581000d",
+                    "count": "1"
+                  }
+                }
+              }
             }
           }
         ]
@@ -928,7 +942,17 @@ task 34 'run-graphql'. lines 497-528:
 Response: {
   "data": {
     "parent_version_4": {
-      "dfAtParentVersion4_outside_range": null
+      "dfAtParentVersion4_outside_range": {
+        "name": {
+          "bcs": "A2RmMQ==",
+          "type": {
+            "repr": "0x0000000000000000000000000000000000000000000000000000000000000001::string::String"
+          }
+        },
+        "value": {
+          "json": "df1"
+        }
+      }
     },
     "parent_version_6": {
       "dfAtParentVersion6": null

crates/sui-graphql-rpc/src/types/dynamic_field.rs

@@ -10,7 +10,7 @@ use sui_types::dynamic_field::{derive_dynamic_field_id, DynamicFieldInfo, Dynami
 
 use super::available_range::AvailableRange;
 use super::cursor::{Page, Target};
-use super::object::{self, deserialize_move_struct, Object, ObjectKind, ObjectLookup};
+use super::object::{self, deserialize_move_struct, Object, ObjectKind};
 use super::type_filter::ExactTypeFilter;
 use super::{
     base64::Base64, move_object::MoveObject, move_value::MoveValue, sui_address::SuiAddress,
@@ -174,9 +174,10 @@ impl DynamicField {
         let super_ = MoveObject::query(
             ctx,
             SuiAddress::from(field_id),
-            ObjectLookup::LatestAt {
-                parent_version,
-                checkpoint_viewed_at,
+            if let Some(parent_version) = parent_version {
+                Object::under_parent(parent_version, checkpoint_viewed_at)
+            } else {
+                Object::latest_at(checkpoint_viewed_at)
             },
         )
         .await?;