Allow results_warning to be null

[miagilepner]

CLA

• I have signed the Stream CLA (required).
• Code changes are tested

Description of the changes, What, Why and How?

Fix typing for results_warning, which can be null

Changelog

[github-actions]

Size Change: 0 B

Total Size: 233 kB

ℹ️ View Unchanged

Filename	Size	Change
dist/browser.es.js	50.7 kB	0 B
dist/browser.full-bundle.min.js	28.8 kB	0 B
dist/browser.js	51.3 kB	0 B
dist/index.es.js	50.8 kB	0 B
dist/index.js	51.3 kB	0 B

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