fix: let Tauri know about hiDPI icons

[ReactorScram]

Untested guess, refs #3999

Looks like we generated a 2x PNG but didn't tell Tauri about it, maybe it'll know what to do if it's added to tauri.conf.json.

[vercel]

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1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
firezone	⬜️ Ignored (Inspect)	Visit Preview		Mar 7, 2024 10:56pm

[github-actions]

Terraform Cloud Plan Output

Plan: 8 to add, 7 to change, 2 to destroy.

Terraform Cloud Plan

[github-actions]

Performance Test Results

TCP

Test Name	Received/s	Sent/s	Retransmits
direct-tcp-client2server	64.5 MiB (-1%)	65.0 MiB (-1%)	41 (0%)
direct-tcp-server2client	53.2 MiB (-1%)	53.4 MiB (-1%)	32 (-14%)
relayed-tcp-client2server	30.4 MiB (+4%)	31.9 MiB (+5%)	116 (-58%)
relayed-tcp-server2client	28.8 MiB (-6%)	30.5 MiB (-5%)	117 (+95%)

UDP

Test Name	Total/s	Jitter	Lost
direct-udp-client2server	50.0 MiB (+0%)	0.18ms (-52%)	0.00% (NaN%)
direct-udp-server2client	50.0 MiB (+0%)	0.19ms (-20%)	0.53% (+26897%)
relayed-udp-client2server	50.0 MiB (+0%)	0.30ms (+9%)	20.41% (-4%)
relayed-udp-server2client	50.0 MiB (-0%)	1.05ms (+215%)	20.77% (-0%)

[jamilbk]

LGTM, maybe mark the ref as "refs #3999 " so we can close it later if it's fixed.