Fix RnaEditorExpanded adding keyDown handle for Escape, Enter. (#6343) #296

Job	Run time
build_ketcher_macro	4m 59s
build_ketcher_micro	4m 42s
playwright_tests_micro (1, 2)	18m 5s
playwright_tests_micro (2, 2)	19m 25s
playwright_tests_macromolecules (1, 4)	16m 48s
playwright_tests_macromolecules (2, 4)	17m 20s
playwright_tests_macromolecules (3, 4)	18m 49s
playwright_tests_macromolecules (4, 4)	15m 39s
	1h 55m 47s

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