fix: Remove JsonSchema and use a Map for inputSchema to support json schemas dialect#749

bilaloumehdi wants to merge 2 commits intomodelcontextprotocol:mainmodelcontextprotocol/java-sdk:mainfrom

bilaloumehdi:fix/json-schema-spec-supportbilaloumehdi/java-sdk:fix/json-schema-spec-supportCopy head branch name to clipboard