MDEV-39360: set statement optimizer_record_context for query fails

[bsrikanth-mariadb]

Move the initialization of context recorder, and replay after run_set_statement_if_requested() is invoked in the mysql_execute_command() in sql_parse.cc

[gemini-code-assist]

Code Review

This pull request addresses MDEV-39360, where using SET STATEMENT optimizer_record_context=1 FOR <query> failed to record the optimizer context. The fix moves the initialization of the optimizer context replay and recorder (init_optimizer_context_replay_if_needed and init_optimizer_context_recorder_if_needed) to occur after ots.init(...) in mysql_execute_command, ensuring that statement-specific variable overrides are properly applied before initialization. Additionally, corresponding regression tests have been added to verify this behavior. There are no review comments, and I have no further feedback to provide.

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