ES|QL - Exclude dense_vector data from response by default #137532
Description
ES|QL retrieves dense_vector data unless users explicitly remove it with DROP / KEEP. Users usually don't need dense_vector other than for debug purposes, so by default we should exclude it similar to #130382
dense_vector data will not be retrieved using ES|QL unless explicitly requested via KEEP or an EVAL command. It will behave by default as if DROP for all dense_vector fields had been requested.