Fix tests: use npe1 version (0.1.2) of napari-ndtiffs

[psobolewskiPhD]

the testfetch_manifest_with_full_install in test_fetch.py uses assert isinstance(mf, NPE1Adapter) for napari-ndtiffs:

npe2/tests/test_fetch.py

Lines 72 to 78 in d7329b7

	@pytest.mark.skipif(not os.getenv("CI"), reason="slow, only run on CI")
	def testfetch_manifest_with_full_install():
	# TODO: slowest of the tests ... would be nice to provide a local mock
	mf = fetch_manifest_with_full_install("napari-ndtiffs")
	assert isinstance(mf, NPE1Adapter)
	assert mf.name == "napari-ndtiffs"
	assert mf.contributions

Recently, that plugin was updated to use npe2, so as a result the test fails.
See also discussion starting here: #275 (comment)

This PR passes the version argument to use version 0.1.2 of the plugin which is npe1. This is the simple fix to keep the test working as it has.

However, maybe it's best to just drop that NPE1 assert, because I'm not sure it matters that the plugin is or isn't npe1—there are two specific npe1 shim tests already.
So then here we would only assert the name and contributions.

PS. my OCD wants to fix the name to test_fetch... but not sure that's ok? 🤣

cc: @tlambert03 @Czaki

[codecov]

Codecov Report

Merging #277 (1fb7c1b) into main (d7329b7) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #277   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           37        37           
  Lines         2813      2813           
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  Hits          2813      2813           

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[Czaki]

We could start with this workaround until someone will find more time to implement it better (if needed)