networkx: Update usages of SupportsGetItem that should be more restrictive
#33833
| Job | Run time |
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| 13s | |
| 4m 30s | |
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| 2m 29s | |
| 2m 33s | |
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| 2m 34s | |
| 2m 58s | |
| 4m 10s | |
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| 1m 25s | |
| 1m 30s | |
| 1m 38s | |
| 3m 32s | |
| 2m 44s | |
| 1m 46s | |
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| 1m 23s | |
| 1m 36s | |
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| 1h 39m 29s |