Fixed some reactivity bugs

[AFatNiBBa]

Made a couple of changes to allow things like the following to work

import AgGridSolid from "solid-ag-grid";
import { SortDirection } from "ag-grid-community";
import { createSignal } from "solid-js";

import "ag-grid-community/styles/ag-grid.css";
import "ag-grid-community/styles/ag-theme-alpine.css";

export default function() {
  const [ get, set ] = createSignal<SortDirection>("asc");
  return <>
    <button onClick={() => set(x => x === "asc" ? "desc" : "asc")}>
      Flip sort
    </button>
    <div class="ag-theme-alpine" style={{ width: "99dvw", height: "99dvh" }}>
      <AgGridSolid
        columnDefs={[
          { field: 'make', sort: get() },
          { field: 'model' },
          { field: 'price' },
        ]}
        rowData={[
          { make: 'Toyota', model: 'Celica', price: 35000 },
          { make: 'Ford', model: 'Mondeo', price: 32000 },
          { make: 'Porsche', model: 'Boxster', price: 72000 },
        ]}
        defaultColDef={{
          flex: 1
        }}
      />
    </div>
  </>
};

The change to columnDefs would have not worked because

• It would have thrown because of the order in which onMount() and createEffect() were executed inside AgGridSolid
• The change would have caused an infinite update loop because the columns were not cached