tree util may skip errors

[danielballan]

Checklist

• Add a Changelog entry
• Add the ticket number which this PR closes to the comment section

Closes #888

Tested on a directory with a single HDF5 file with a broken external link. In main, I can reproduce #888:

❯ tiled tree --profile local
└── stuff
    └── main
<snipped traceback>
HTTPStatusError: Server error '500 Internal Server Error' for url 'http://localhost:8000/api/v1/search/stuff/main?page%5Boffset%5D=0&sort='

In this PR branch:

❯ tiled tree --profile local
└── stuff
    └── main
SKIPPING due to error: Server error '500 Internal Server Error' for url 'http://localhost:8000/api/v1/search/stuff/main?page%5Boffset%5D=0&sort='
For more information, server admin can search server logs for correlation ID 87d503846a48e9c3.

In both cases, server logs:

KeyError: "Unable to synchronously open object (unable to open external file, external link file name = 'source.h5')"

[danielballan]

Interesting. When I add a second file, to verify that tree continues on past the broken file, I get this.

SKIPPING due to error: [Errno 104] Connection reset by peer

Needs more investigation, not sure where that would be coming from.