Social: Fix Bluesky custom domain handle not being accepted #64043

Job	Run time
detect changed files	8s
Changelogger use	17s
Changelogger validity	31s
Copied files are in sync	6s
Project structure	2m 25s
PHP lint (7.0)	27s
PHP lint (7.2)	31s
PHP lint (7.4)	30s
PHP lint (8.0)	29s
PHP lint (8.1)	46s
PHP lint (8.2)	41s
PHP lint (8.3)	30s
PHP Code Sniffer (non-excluded files only)	0s
ESLint (non-excluded files only)	2m 21s
ESLint (changes to excluded files only)	0s
Lint GitHub Actions yaml files	0s
PHP Compatibility	0s
PHP Code Sniffer (changes to excluded files only)	0s
Check linter exclude lists	0s
Lock files are up to date	0s
Monorepo package version refs	0s
	9m 42s

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