v3dv: reset pending cpu job state once processed

If we have any pending jobs queued in the command buffer state
to be emitted at the end of a given job, make sure we reset
that state once these have been processed.

cc: mesa-table

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19770>

src/broadcom/vulkan/v3dv_cmd_buffer.c

@@ -582,6 +582,7 @@ cmd_buffer_add_cpu_jobs_for_pending_state(struct v3dv_cmd_buffer *cmd_buffer)
          job->cpu.query_end = state->query.end.states[i];
          list_addtail(&job->list_link, &cmd_buffer->jobs);
       }
+      state->query.end.used_count = 0;
    }
 }