fix(tools): accept dict output_schema in SetModelResponseTool (#5469)#5516

MukundaKatta wants to merge 2 commits intogoogle:maingoogle/adk-python:mainfrom

MukundaKatta:fix/set-model-response-tool-dict-schemaMukundaKatta/adk-python:fix/set-model-response-tool-dict-schemaCopy head branch name to clipboard