Minor: Remove memory reservation in JoinLeftData used in HashJoin (#13751)

* Refactor JoinLeftData structure by removing unused memory reservation field in hash join implementation

* Add Debug and Clone derives for HashJoinStreamState and ProcessProbeBatchState enums

This commit enhances the HashJoinStreamState and ProcessProbeBatchState structures by implementing the Debug and Clone traits, allowing for easier debugging and cloning of these state representations in the hash join implementation.

Author: jayzhan-synnada

datafusion/physical-plan/src/joins/hash_join.rs

@@ -90,9 +90,6 @@ struct JoinLeftData {
     /// Counter of running probe-threads, potentially
     /// able to update `visited_indices_bitmap`
     probe_threads_counter: AtomicUsize,
-    /// Memory reservation that tracks memory used by `hash_map` hash table
-    /// `batch`. Cleared on drop.
-    _reservation: MemoryReservation,
 }
 
 impl JoinLeftData {
@@ -102,14 +99,12 @@ impl JoinLeftData {
         batch: RecordBatch,
         visited_indices_bitmap: SharedBitmapBuilder,
         probe_threads_counter: AtomicUsize,
-        reservation: MemoryReservation,
     ) -> Self {
         Self {
             hash_map,
             batch,
             visited_indices_bitmap,
             probe_threads_counter,
-            _reservation: reservation,
         }
     }
 
@@ -902,7 +897,6 @@ async fn collect_left_input(
         single_batch,
         Mutex::new(visited_indices_bitmap),
         AtomicUsize::new(probe_threads_count),
-        reservation,
     );
 
     Ok(data)
@@ -1019,6 +1013,7 @@ impl BuildSide {
 ///  └─ ProcessProbeBatch
 ///
 /// ```
+#[derive(Debug, Clone)]
 enum HashJoinStreamState {
     /// Initial state for HashJoinStream indicating that build-side data not collected yet
     WaitBuildSide,
@@ -1044,6 +1039,7 @@ impl HashJoinStreamState {
 }
 
 /// Container for HashJoinStreamState::ProcessProbeBatch related data
+#[derive(Debug, Clone)]
 struct ProcessProbeBatchState {
     /// Current probe-side batch
     batch: RecordBatch,