Fix SYCL `im2col` and `convert` Overflow with Large Dims (llama/9052)

Fix SYCL `im2col` and `convert` Overflow with Large Dims (llama/9052)

* sycl: fix im2col overflow and sync with cuda

Signed-off-by: zhentaoyu <redacted>
* sycl: fix convert overflow

Signed-off-by: zhentaoyu <redacted>
* sycl: fix convert and dequantize

Signed-off-by: zhentaoyu <redacted>
* sycl: fix ib in dmmv

Signed-off-by: zhentaoyu <redacted>
* sycl:refine convert

Signed-off-by: zhentaoyu <redacted>
* sycl: move downsample global_range into common

Signed-off-by: zhentaoyu <redacted>
* test: add im2col and convert test cases

Signed-off-by: zhentaoyu <redacted>
* test: make new cases only in sycl

Signed-off-by: zhentaoyu <redacted>
* test: comment new test_cases for only local testing

Signed-off-by: zhentaoyu <redacted>
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Signed-off-by: zhentaoyu <redacted>