perf: don't handle SitePage nodes when deleting stale nodes #39161
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topic: core
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Description
When we are clearing up stale nodes (nodes that exist from previous build that were not recreated in current build), we are deleting all
SitePagenodes because at this point in time site creation didn't run yet. This results in mass nodes deletion and subsequent mass node creation - other than being wasteful this tends to lead to increase in LMDB datastore file size increasing as managing disk size is not priority for it so it tends to allocate more and more space over time with data mutations even if "logical" data remains at similar volume. This PR mainly looks to avoid wasteful LMDB operations and thus trying to slow down LMDB filesize increases over timeDocumentation
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