Make datashader work in Jupyterlite/ Panelite

When running the notebook gallery/simple/clifford_interact.ipynb in [Panelite](https://panelite.holoviz.org/lab/index.html) v 0.14.4 I can see its not working because Datashader cannot be imported due to a dependency on datashape.

Please make datashader work in Panelite :-)


```bash
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
Cell In[1], line 2
1 import piplite
----> 2 await piplite.install(['panel', 'datashader', 'colorcet'])

File /lib/python3.10/asyncio/futures.py:284, in Future.__await__(self)
282 if not self.done():
283 self._asyncio_future_blocking = True
--> 284 yield self # This tells Task to wait for completion.
285 if not self.done():
286 raise RuntimeError("await wasn't used with future")

File /lib/python3.10/asyncio/tasks.py:304, in Task.__wakeup(self, future)
302 def __wakeup(self, future):
303 try:
--> 304 future.result()
305 except BaseException as exc:
306 # This may also be a cancellation.
307 self.__step(exc)

File /lib/python3.10/asyncio/futures.py:201, in Future.result(self)
199 self.__log_traceback = False
200 if self._exception is not None:
--> 201 raise self._exception
202 return self._result

File /lib/python3.10/asyncio/tasks.py:234, in Task.__step(***failed resolving arguments***)
232 result = coro.send(None)
233 else:
--> 234 result = coro.throw(exc)
235 except StopIteration as exc:
236 if self._must_cancel:
237 # Task is cancelled right before coro stops.

File /lib/python3.10/site-packages/piplite/piplite.py:102, in _install(requirements, keep_going, deps, credentials, pre)
100 """Invoke micripip.install with a patch to get data from local indexes"""
101 with patch("micropip._micropip._get_pypi_json", _get_pypi_json):
--> 102 return await _micropip.install(
103 requirements=requirements,
104 keep_going=keep_going,
105 deps=deps,
106 credentials=credentials,
107 pre=pre,
108 )

File /lib/python3.10/site-packages/micropip/_micropip.py:573, in install(requirements, keep_going, deps, credentials, pre)
563 wheel_base = Path(getsitepackages()[0])
565 transaction = Transaction(
566 ctx=ctx,
567 ctx_extras=[],
(...)
571 fetch_kwargs=fetch_kwargs,
572 )
--> 573 await transaction.gather_requirements(requirements)
575 if transaction.failed:
576 failed_requirements = ", ".join([f"'{req}'" for req in transaction.failed])

File /lib/python3.10/site-packages/micropip/_micropip.py:333, in Transaction.gather_requirements(self, requirements)
330 for requirement in requirements:
331 requirement_promises.append(self.add_requirement(requirement))
--> 333 await gather(*requirement_promises)

File /lib/python3.10/asyncio/futures.py:284, in Future.__await__(self)
282 if not self.done():
283 self._asyncio_future_blocking = True
--> 284 yield self # This tells Task to wait for completion.
285 if not self.done():
286 raise RuntimeError("await wasn't used with future")

File /lib/python3.10/asyncio/tasks.py:304, in Task.__wakeup(self, future)
302 def __wakeup(self, future):
303 try:
--> 304 future.result()
305 except BaseException as exc:
306 # This may also be a cancellation.
307 self.__step(exc)

File /lib/python3.10/asyncio/futures.py:201, in Future.result(self)
199 self.__log_traceback = False
200 if self._exception is not None:
--> 201 raise self._exception
202 return self._result

File /lib/python3.10/asyncio/tasks.py:234, in Task.__step(***failed resolving arguments***)
232 result = coro.send(None)
233 else:
--> 234 result = coro.throw(exc)
235 except StopIteration as exc:
236 if self._must_cancel:
237 # Task is cancelled right before coro stops.

File /lib/python3.10/site-packages/micropip/_micropip.py:340, in Transaction.add_requirement(self, req)
337 return await self.add_requirement_inner(req)
339 if not urlparse(req).path.endswith(".whl"):
--> 340 return await self.add_requirement_inner(Requirement(req))
342 # custom download location
343 wheel = WheelInfo.from_url(req)

File /lib/python3.10/site-packages/micropip/_micropip.py:448, in Transaction.add_requirement_inner(self, req)
443 if self.check_version_satisfied(req):
444 # Maybe while we were downloading pypi_json some other branch
445 # installed the wheel?
446 return
--> 448 await self.add_wheel(wheel, req.extras)

File /lib/python3.10/site-packages/micropip/_micropip.py:463, in Transaction.add_wheel(self, wheel, extras)
461 await wheel.download(self.fetch_kwargs)
462 if self.deps:
--> 463 await self.gather_requirements(wheel.requires(extras))
465 self.wheels.append(wheel)

File /lib/python3.10/site-packages/micropip/_micropip.py:333, in Transaction.gather_requirements(self, requirements)
330 for requirement in requirements:
331 requirement_promises.append(self.add_requirement(requirement))
--> 333 await gather(*requirement_promises)

File /lib/python3.10/asyncio/futures.py:284, in Future.__await__(self)
282 if not self.done():
283 self._asyncio_future_blocking = True
--> 284 yield self # This tells Task to wait for completion.
285 if not self.done():
286 raise RuntimeError("await wasn't used with future")

File /lib/python3.10/asyncio/tasks.py:304, in Task.__wakeup(self, future)
302 def __wakeup(self, future):
303 try:
--> 304 future.result()
305 except BaseException as exc:
306 # This may also be a cancellation.
307 self.__step(exc)

File /lib/python3.10/asyncio/futures.py:201, in Future.result(self)
199 self.__log_traceback = False
200 if self._exception is not None:
--> 201 raise self._exception
202 return self._result

File /lib/python3.10/asyncio/tasks.py:232, in Task.__step(***failed resolving arguments***)
228 try:
229 if exc is None:
230 # We use the `send` method directly, because coroutines
231 # don't have `__iter__` and `__next__` methods.
--> 232 result = coro.send(None)
233 else:
234 result = coro.throw(exc)

File /lib/python3.10/site-packages/micropip/_micropip.py:337, in Transaction.add_requirement(self, req)
335 async def add_requirement(self, req: str | Requirement) -> None:
336 if isinstance(req, Requirement):
--> 337 return await self.add_requirement_inner(req)
339 if not urlparse(req).path.endswith(".whl"):
340 return await self.add_requirement_inner(Requirement(req))

File /lib/python3.10/site-packages/micropip/_micropip.py:435, in Transaction.add_requirement_inner(self, req)
432 metadata = await _get_pypi_json(req.name, self.fetch_kwargs)
434 try:
--> 435 wheel = find_wheel(metadata, req)
436 except ValueError:
437 self.failed.append(req)

File /lib/python3.10/site-packages/micropip/_micropip.py:303, in find_wheel(metadata, req)
300 if best_wheel is not None:
301 return wheel
--> 303 raise ValueError(
304 f"Can't find a pure Python 3 wheel for '{req}'.\n"
305 f"See: {FAQ_URLS['cant_find_wheel']}\n"
306 "You can use `micropip.install(..., keep_going=True)`"
307 "to get a list of all packages with missing wheels."
308 )

ValueError: Can't find a pure Python 3 wheel for 'datashape'.
See: https://pyodide.org/en/stable/usage/faq.html#micropip-can-t-find-a-pure-python-wheel
You can use `micropip.install(..., keep_going=True)`to get a list of all packages with missing wheels.
```

Start by reproducing the install in gallery/simple/clifford_interact.ipynb using Panelite v0.14.4 and the shown piplite command. Inspect Datashader's datashape dependency and its available wheel support in the JupyterLite environment. Done means the notebook installs Datashader and runs without the reported missing pure-Python wheel error.

Written by the indexing model from the issue text.