iris: Restore flagging of dirty bindings in binder_realloc

iris: Restore flagging of dirty bindings in binder_realloc

When I switched iris over to use 3DSTATE_BINDING_TABLE_POOL_ALLOC, I
stopped flagging things dirty when allocating a new binder, because
the contents of the binding table were still valid, thanks to us not
having to subtract Surface State Base Address anymore.

This unfortunately missed the point that the old binding table is in the
old buffer, which is no longer what the binder pool base address points
to.  So we'd either need to copy it over, or just flag it dirty and
re-emit it on the next draw.

Fixes misrendering in Ryujinx.

Fixes: 8b9045e7a45 ("intel: Use 3DSTATE_BINDING_TABLE_POOL_ALLOC exclusively on Gfx11+")
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15314>