Mark the buffer created from parsing tensors as dispatchable (#5680)
Mark the buffer created from parsing tensors as dispatchable (#5680)

The buffers containing the parsed tensor elements are typically
used as initial inputs and bound to pipelines. Marking them as
suitable for dispatch fixes the Vulkan validation issue:

[ VUID-VkWriteDescriptorSet-descriptorType-00331 ]
Attempted write update to buffer descriptor failed due to:
Buffer with usage mask 0x3 being used for a descriptor update
of type VK_DESCRIPTOR_TYPE_STORAGE_BUFFER does not have
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT set..
The Vulkan spec states: If descriptorType is VK_DESCRIPTOR_TYPE_STORAGE_BUFFER
or VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, the buffer member
of each element of pBufferInfo must have been created with
VK_BUFFER_USAGE_STORAGE_BUFFER_BIT set.
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