Replaced GL_KOS_texture_stride with GL_KOS_texture_non_power_of_two
Removed the explicit texture parameter and made supported NPOT GL_TEXTURE_2D textures automatically use the PVR strided backend
Added clamp-only validation and retained the existing restrictions around mipmaps, wrapping, and unsupported formats
The underlying PVR strided implementation remains the same. GL_NV_texture_rectangle can be considered as a future follow-up.
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