intel/fs: Check if the whole ubo load range is in the push const range

intel/fs: Check if the whole ubo load range is in the push const range

Before this, we were checking only the beginning of the ubo range, so
partially overlapping loads were trying to load undefined data.

Fixes: b2da1238 ("i965: Use pushed UBO data in the scalar backend.")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9748
Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25111>