webnn: Support gather nd in tflite converter
Implement WebNN gather_nd operation with TFLite GATHER_ND builtin
operator.
Refine clamp operation with the min and max for unsupported range.
Bug: 40206287
Change-Id: I2a332e93dc712676a06636b1cb8be4fa4fbc8eed
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5925040
Reviewed-by: ningxin hu ningxin.hu@intel.com
Reviewed-by: Austin Sullivan asully@chromium.org
Commit-Queue: Junwei Fu junwei.fu@intel.com
Cr-Commit-Position: refs/heads/main@{#1368689}