Fix high memory usage regression due to namespaces #132
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This fixes the high memory usage regression that was introduced in 2.6.2.
This fixes issue #122
Without this commit, when I try to parse a 33MB xlsx file (500_000 rows) and it consumes 8GB. With this commit it's consuming few hundreds (~300MB)
The reason lies in the namespaces due to all hash instantiation it does for all nodes.
Before this commit:
Screencast from 2025-05-27 09-54-59.webm
With this commit:
Screencast from 2025-05-27 09-58-59.webm