[SPARK-53777] Update Spark Connect-generated Swift source code with 4.1.0-preview2

[dongjoon-hyun]

What changes were proposed in this pull request?

This PR aims to update Spark Connect-generated Swift source code with Apache Spark 4.1.0-preview2.

Why are the changes needed?

There are many changes from Apache Spark 4.1.0.

• [SPARK-53578][CONNECT] Simplify data type handling in LiteralValueProtoConverter spark#52342
• [SPARK-53507][CONNECT] Add breaking change info to errors spark#52256
• [SPARK-53525][CONNECT] Spark Connect ArrowBatch Result Chunking spark#52271
• [SPARK-53402][CONNECT] Support Direct Passthrough Partitioning Dataset API in Spark Connect in Scala spark#52242
• [SPARK-52449][CONNECT][PYTHON][ML] Make datatypes for Expression.Literal.Map/Array optional spark#51473
• [SPARK-52930][CONNECT] Use DataType.Array/Map for Array/Map Literals spark#51653
• [SPARK-53328][ML][CONNECT] Improve debuggability for SparkML-connect spark#52072
• [SPARK-52448][CONNECT] Add simplified Struct Expression.Literal spark#51561
• [SPARK-52851][SDP] Remove public APIs for append once flows spark#51563
• [SPARK-52511][SDP] Support dry-run mode in spark-pipelines command spark#51489
• [SPARK- 52810][SDP][SQL] Spark Pipelines CLI Selection Options spark#51507
• [SPARK-52779][SQL][CONNECT] Support TimeType literal in Connect spark#51462
• [SPARK-52770][CONNECT] Support TIME type in connect proto spark#51464
• [SPARK-52757][CONNECT] Rename "plan" field in DefineFlow to "relation" spark#51442

To use the latest bug fixes and new messages to develop for new features of 4.1.0-preview2.

$ git clone -b v4.1.0-preview2 https://github.com/apache/spark.git
$ cd spark/sql/connect/common/src/main/protobuf/
$ protoc --swift_out=. spark/connect/*.proto
$ protoc --grpc-swift_out=. spark/connect/*.proto

// Remove empty GRPC files
$ cd spark/connect

$ grep 'This file contained no services' *
catalog.grpc.swift:// This file contained no services.
commands.grpc.swift:// This file contained no services.
common.grpc.swift:// This file contained no services.
example_plugins.grpc.swift:// This file contained no services.
expressions.grpc.swift:// This file contained no services.
ml_common.grpc.swift:// This file contained no services.
ml.grpc.swift:// This file contained no services.
pipelines.grpc.swift:// This file contained no services.
relations.grpc.swift:// This file contained no services.
types.grpc.swift:// This file contained no services.

$ rm catalog.grpc.swift commands.grpc.swift common.grpc.swift example_plugins.grpc.swift expressions.grpc.swift ml_common.grpc.swift ml.grpc.swift pipelines.grpc.swift relations.grpc.swift types.grpc.swift

Does this PR introduce any user-facing change?

Pass the CIs.

How was this patch tested?

Pass the CIs.

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

No.

[dongjoon-hyun]

Thank you, @viirya . Merged to main.