Python: Update chat history channel to produce the correct messages with a visibility bool

[moonbox3]

Motivation and Context

To align with the dotnet ChatHistoryChannel, there needs to be an update to the Python ChatHistoryChannel that properly handles the invoked message via a queue. This allows the final messages to be produced (as they sometimes may contain function call content or function result content). The messages are also produced with an is_visibile bool.

Description

This PR:

• updates the chat history channel to implement the queue that handles ChatMessageContent types and the is_visible bool to the caller.
  • This change requires the use of a set and thus an implementation of a __hash__ method for some content types so we know we're not adding/handling duplicate messages.
• Upgrades OpenAI package to 1.37.1 (supersedes a previous Dependabot PR doing the same)
• Updates unit tests for ChatHistoryChannel based on the new code to maintain 100% coverage.
• Adds a missing parallel_tool_calls bool in the Run object of agent unit tests related to the upgrade to OpenAI 1.37.1.

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[markwallace-microsoft]

Python Test Coverage Report

File	Stmts	Miss	Cover	Missing
semantic_kernel
kernel.py	157	7	96%	145, 156, 160, 310–313, 422
semantic_kernel/connectors/ai/azure_ai_inference/services
azure_ai_inference_chat_completion.py	149	4	97%	169, 312, 416, 430
semantic_kernel/connectors/ai/embeddings
embedding_generator_base.py	8	1	88%	50
semantic_kernel/connectors/ai/google
shared_utils.py	39	2	95%	100, 122
semantic_kernel/connectors/ai/google/google_ai/services
google_ai_chat_completion.py	145	3	98%	149, 251, 287
utils.py	62	3	95%	138, 156–161
semantic_kernel/connectors/ai/google/vertex_ai/services
utils.py	64	3	95%	140, 158–163
vertex_ai_chat_completion.py	145	3	98%	143, 244, 280
semantic_kernel/connectors/ai/hugging_face/services
hf_text_completion.py	54	3	94%	95, 103, 134
hf_text_embedding.py	32	5	84%	77–81
semantic_kernel/connectors/openapi_plugin
openapi_manager.py	58	2	97%	110–111
openapi_parser.py	88	1	99%	127
openapi_runner.py	105	2	98%	181–182
semantic_kernel/connectors/openapi_plugin/models
rest_api_operation.py	129	1	99%	240
semantic_kernel/contents
function_call_content.py	97	1	99%	201
semantic_kernel/functions
kernel_function_decorator.py	98	1	99%	102
kernel_function_from_method.py	96	1	99%	153
kernel_function_from_prompt.py	154	7	95%	165–166, 180, 201, 219, 239, 322
kernel_plugin.py	187	2	99%	472, 475
semantic_kernel/planners
plan.py	234	45	81%	52, 161–163, 195, 212–225, 262, 267, 275–276, 286–289, 306, 311, 327, 330–335, 353, 358, 361, 363, 370, 384–386, 391–395
semantic_kernel/planners/function_calling_stepwise_planner
function_calling_stepwise_planner.py	116	4	97%	143, 187–188, 196
semantic_kernel/planners/sequential_planner
sequential_planner.py	64	6	91%	69, 73, 107, 123, 132–133
sequential_planner_extensions.py	50	9	82%	29–30, 52, 106–120
sequential_planner_parser.py	77	12	84%	64–72, 91, 115–118
semantic_kernel/schema
kernel_json_schema_builder.py	119	5	96%	48, 82, 204, 208–209
semantic_kernel/template_engine/blocks
code_block.py	77	1	99%	119
named_arg_block.py	43	1	98%	98
semantic_kernel/utils/telemetry
decorators.py	113	4	96%	232, 240, 243, 252
user_agent.py	16	2	88%	18–19
TOTAL	8627	141	98%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
2102	1 💤	0 ❌	0 🔥	51.369s ⏱️