Changes

Summary

Adding a better way of getting the best matching node when we are working with a position of the caret and not a selection interval. (details)

Commit 1fc8a0c0c1ffaa1fbe3deb92d58722259370e83a by tesonep Adding a better way of getting the best matching node when we are working with a position of the caret and not a selection interval. Just changing the users to fix the issue Fix #8887
	src/AST-Core-Tests/RBProgramNodeTest.class.st (diff)
	src/Tools-CodeNavigation/CNSelectorExtractor.class.st (diff)
	src/AST-Core/RBProgramNode.class.st (diff)
	src/Calypso-SystemTools-Core/ClyMethodCodeEditorToolMorph.class.st (diff)