make getdaft[dashboard] optional and not warn

[kevinjqliu]

Describe the bug

pyiceberg upgrading to use getdaft 0.4.5 fails CI, apache/iceberg-python#1739

Due to the warning statement about daft_dashboard import

Daft/daft/dashboard.py

Lines 14 to 28 in 5481c7e

	def _dashboard_module():
	try:
	import daft_dashboard
	except ImportError:
	warnings.warn(
	"Unable to import Daft's dashboard features"
	"Consider re-installing Daft with the 'dashboard' feature installed, e.g.:"
	'pip install "getdaft[dashboard]"'
	)
	raise
	if not daft_dashboard.__file__:
	raise ImportError
	return daft_dashboard

We have CI to error on warnings

To Reproduce

No response

Expected behavior

No response

Component(s)

Other

Additional context

No response

[universalmind303]

@raunakab could you take a look at this one.

[universalmind303]

fixed via #3888.