Added Python 3.14 built-in complete platforms for AWS Lambda (#23107)

Added built-in complete platform configurations for Python 3.14 on both x86_64 and arm64 (Graviton2)

Author: jbsilva

docs/notes/2.32.x.md

@@ -53,9 +53,9 @@ Pants will attempt to only preserve the `mypy` cache when `mypy` returns a [prob
 
 The default version of mypy used by Pants has been updated to [1.19.1](https://mypy-lang.blogspot.com/2025/11/mypy-119-released.html).  This includes support for the new "Fixed‑Format" cache.
 
-The `grpc-python-plugin` tool now uses an updated `v1.73.1` plugin built from  <https://github.com/nhurden/protoc-gen-grpc-python-prebuilt]. This also brings `macos_arm64` support.
-
+The `runtime` field of [`aws_python_lambda_layer`](https://www.pantsbuild.org/2.32/reference/targets/python_aws_lambda_layer#runtime) or [`aws_python_lambda_function`](https://www.pantsbuild.org/2.32/reference/targets/python_aws_lambda_function#runtime) now has built-in complete platform configurations for x86-64 and arm64 Python 3.14. This provides stable support for Python 3.14 lambdas out of the box, allowing deleting manual `complete_platforms` configuration if any.
 
+The `grpc-python-plugin` tool now uses an updated `v1.73.1` plugin built from  <https://github.com/nhurden/protoc-gen-grpc-python-prebuilt]. This also brings `macos_arm64` support.
 
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