fix(lit-components): fix rendering and interaction issues in force-graph, html-table, and draggable-dom

- lit-force-graph: Refactored for instance reuse, better lifecycle management, and added dynamic imports for AR/VR modes.
- lit-html-table: Improved visual design, readability of headers, and fixed reactivity in editable mode.
- lit-draggable-dom: Fixed clipping issues by switching to relative/absolute positioning and resolved a panning speed bug caused by CSS variable inheritance.

lit-components/test-support/mocks/three.ts

@@ -0,0 +1,79 @@
+export class WebGLRenderer {
+  domElement = document.createElement("div");
+  setSize() {}
+  render() {}
+  dispose() {}
+  setAnimationLoop() {}
+  setClearColor() {}
+}
+
+export class Scene {
+  add() {}
+  remove() {}
+}
+
+export class PerspectiveCamera {
+  position = { set: () => {}, x: 0, y: 0, z: 0 };
+  lookAt() {}
+  aspect = 1;
+  updateProjectionMatrix() {}
+}
+
+export class AmbientLight {}
+export class DirectionalLight {
+  position = { set: () => {} };
+  shadow = {
+    mapSize: { width: 0, height: 0 },
+    camera: { near: 0, far: 0, left: 0, right: 0, top: 0, bottom: 0 }
+  };
+}
+
+export class Mesh {
+  position = { set: () => {}, x: 0, y: 0, z: 0 };
+  rotation = { x: 0, y: 0, z: 0 };
+  scale = { set: () => {} };
+  userData = {};
+}
+
+export class BoxGeometry {}
+export class MeshStandardMaterial {}
+export class MeshBasicMaterial {}
+export class Color {
+  set() {}
+}
+export class Vector3 {
+  set() {}
+}
+export class Group {
+  add() {}
+  remove() {}
+  position = { set: () => {} };
+}
+export class Object3D {
+  add() {}
+  remove() {}
+}
+
+export class Raycaster {
+  setFromCamera() {}
+  intersectObjects() { return []; }
+}
+
+const threeMock = {
+  WebGLRenderer,
+  Scene,
+  PerspectiveCamera,
+  AmbientLight,
+  DirectionalLight,
+  Mesh,
+  BoxGeometry,
+  MeshStandardMaterial,
+  MeshBasicMaterial,
+  Color,
+  Vector3,
+  Group,
+  Object3D,
+  Raycaster,
+};
+
+export default threeMock;