[Backport release/3.7] Rasterize: avoid burning the same pixel twice in MERGE_ALG=ADD mode within a same geometry (fixes #8437)#8456

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rouault merged 1 commit intorelease/3.7from backport-8444-to-release/3.7

Sep 22, 2023

Commits on Sep 22, 2023

Rasterize: avoid burning the same pixel twice in MERGE_ALG=ADD mode within a same geometry (fixes #8437 )

rouault
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