Fix Bluetooth block not working when device has no icon #885

Job	Run time
pre-commit (check-toml)	40s
pre-commit (check-yaml)	45s
pre-commit (check-merge-conflict)	41s
pre-commit (check-case-conflict)	54s
pre-commit (detect-private-key)	45s
pre-commit (mixed-line-ending)	41s
pre-commit (trailing-whitespace)	48s
pre-commit (cspell)	59s
pre-commit (typos)	57s
pre-commit (cargo-fmt)	45s
pre-commit (cargo-clippy)	2m 18s
pre-commit (cargo-test)	2m 20s
pre-commit (verify_icon_files)	38s
	13m 11s

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