[Backport release-3_40] add missed import and fix getThemeIcon() call (follow-up #60261) #37045

Job	Run time
build (24.04, 5, true, OFF, ON, ON, ON, ON, OFF, OFF, OFF, OFF, ON, false)	22m 13s
build (39, 6, true, ON, OFF, ON, ON, OFF, OFF, ON, ON, ON, OFF, false)	30m 45s
clang-tidy (24.04, 5)	8m 4s
Run tests (5, ALL_BUT_PROVIDERS)	36m 34s
Run tests (5, POSTGRES)	8m 5s
Run tests (5, HANA)	7m 38s
Run tests (6, ALL_BUT_PROVIDERS)	40m 36s
Run tests (5, ORACLE, 24.04, binary-for-oracle)	7m 44s
	2h 41m 39s

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