refactor: Improve linebreak logic for html messages #2073

Job	Run time
app_jobs / database_web_tests	41s
app_jobs / coverage_without_olm	1m 57s
app_jobs / coverage	2m 5s
app_jobs / dart_web_compatible	55s
app_jobs / e2ee_test (synapse)	1m 49s
app_jobs / pub-dev-dry-run	25s
dart / dart_analyzer	33s
app_jobs / e2ee_test (dendrite)	1m 50s
general / conventional_commits	4s
app_jobs / e2ee_test (conduit)	1m 46s
app_jobs / merge_converage	30s
app_jobs / review_app_coverage / cleanup_review_app	5s
app_jobs / review_app_coverage / deploy_review_app	10s
app_jobs / review_app_coverage / qa_app	0s
	12m 50s

Provide feedback