fix: print deploy error_message, if exists

[Skn0tt]

Summary

For deploy that fails while going live, we're currently printing a very non-explanatory error message - although we already might have a good one in deploy.error_message! This PR makes it so that that message is printed, if it exists.

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[github-actions]

📊 Benchmark results

Comparing with cec55d1

Package size: 265 MB

⬇️ 0.00% decrease vs. cec55d1

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Legend

• T-30 (89754a1): 267 MB
• T-29 (2aa9341): 267 MB
• T-28 (734c23c): 267 MB
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• T-21 (384e168): 272 MB
• T-20 (a0f3719): 272 MB
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• T-17 (4600e9b): 265 MB
• T-16 (b0a6c85): 265 MB
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• T-14 (cfcee54): 265 MB
• T-13 (63d415b): 265 MB
• T-12 (83a81b1): 265 MB
• T-11 (8fe8339): 265 MB
• T-10 (21f413c): 265 MB
• T-9 (68caa51): 265 MB
• T-8 (78a1932): 265 MB
• T-7 (5eff7c1): 265 MB
• T-6 (3768f87): 265 MB
• T-5 (159c7c8): 265 MB
• T-4 (d936220): 265 MB
• T-3 (cd9ebf8): 265 MB
• T-2 (6cee5bc): 265 MB
• T-1 (cec55d1): 265 MB
• T (current commit): 265 MB

[khendrikse]

Let's go!