Fixed the bug of ExtendBackward when the restrict area is not empty#15277
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Anzz-bot wants to merge 2 commits intoApolloAuto:masterfrom
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Fixed the bug of ExtendBackward when the restrict area is not empty#15277Anzz-bot wants to merge 2 commits intoApolloAuto:masterfrom
Anzz-bot wants to merge 2 commits intoApolloAuto:masterfrom