Filename wildcards can capture collections in filter_datasets

[k1o0]

for example, with datasets such as

raw_ephys_data/_spikeglx_ephysData_g0_t0.nidq.meta
raw_ephys_data/probe00/_spikeglx_ephysData_g0_t0.ap.meta
raw_ephys_data/probe00/_spikeglx_ephysData_g0_t0.lf.meta

filter_datasets('*.meta', 'raw_ephys_data') returns all three datasets as the filename wildcard is greedy. It should not return the matching filenames in sub-collections.