[SPARK-52151] DataFrameWriterV2.overwrite should handle condition

### What changes were proposed in this pull request?

This PR aims to fix `DataFrameWriterV2.overwrite` to handle the `condition` parameter.

### Why are the changes needed?

This was missed at the initial implementation.

### Does this PR introduce _any_ user-facing change?

Yes, but this is a bug fix.

### How was this patch tested?

Pass the CIs. Apache Iceberg CI will be added soon.

### Was this patch authored or co-authored using generative AI tooling?

No.

Closes #149 from dongjoon-hyun/SPARK-52151.

Authored-by: Dongjoon Hyun <[email protected]>
Signed-off-by: Dongjoon Hyun <[email protected]>

Author: dongjoon-hyun

Sources/SparkConnect/DataFrameWriterV2.swift

@@ -109,7 +109,7 @@ public actor DataFrameWriterV2: Sendable {
   /// output table.
   /// - Parameter condition: A filter condition.
   public func overwrite(condition: String) async throws {
-    try await executeWriteOperation(.overwrite)
+    try await executeWriteOperation(.overwrite, condition)
   }
 
   /// Overwrite all partition for which the ``DataFrame`` contains at least one row with the contents
@@ -120,7 +120,10 @@ public actor DataFrameWriterV2: Sendable {
     try await executeWriteOperation(.overwritePartitions)
   }
 
-  private func executeWriteOperation(_ mode: WriteOperationV2.Mode) async throws {
+  private func executeWriteOperation(
+    _ mode: WriteOperationV2.Mode,
+    _ overwriteCondition: String? = nil
+  ) async throws {
     var write = WriteOperationV2()
 
     let plan = await self.df.getPlan() as! Plan
@@ -139,6 +142,9 @@ public actor DataFrameWriterV2: Sendable {
     for property in self.tableProperties.toStringDictionary() {
       write.tableProperties[property.key] = property.value
     }
+    if let overwriteCondition {
+      write.overwriteCondition = overwriteCondition.toExpression
+    }
     write.mode = mode
 
     var command = Spark_Connect_Command()