fix wb-3383

[raubitsj]

Tested now.

Changes:

• moved version check to sender (since it can block) handler shouldnt ever block
• fixed how we handle wandb.init() failures better, still needs more cleanup
• make sure version check has a thread so it can timeout when DNS hangs

[coveralls]

Pull Request Test Coverage Report for Build 9736c89d-30c3-4892-b879-5fb19d184999

• 18 of 31 (58.06%) changed or added relevant lines in 5 files are covered.
• 108 unchanged lines in 23 files lost coverage.
• Overall coverage increased (+4.06%) to 65.066%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
wandb/internal/handler.py	1	2	50.0%
wandb/internal/update.py	4	5	80.0%
wandb/interface/interface.py	2	4	50.0%
wandb/sdk/wandb_init.py	7	9	77.78%
wandb/internal/sender.py	4	11	36.36%
<!--	Total:	18	31	58.06%	-->

Files with Coverage Reduction	New Missed Lines	%
wandb/apis/internal_runqueue.py	1	25.0%
wandb/filesync/dir_watcher.py	1	81.62%
wandb/internal/internal_api.py	1	56.54%
wandb/internal/meta.py	1	72.39%
wandb/internal/run.py	1	61.54%
wandb/util.py	1	64.52%
tests/test_datastore.py	2	97.83%
tests/test_util.py	2	97.44%
tests/utils/notebook_client.py	2	72.22%
wandb/cli/cli.py	2	62.47%
<!--	Total:	108		-->

Totals
Change from base Build 22c3d25e-fbb9-46e3-9eac-47e3ae87aa84:	4.06%
Covered Lines:	13792
Relevant Lines:	21197

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💛 - Coveralls