many-collection-test failed on Large scale tests

Host: ec2-100-27-32-28.compute-1.amazonaws.com
Project: WiredTiger (develop)
Commit: diff: WT-7757 Skip internal and leaf pages with content obsolete to the reader (#6842)

• Skip pages not needed to be read at higher level, not just leaf pages.
• Move dirty-page-check to after locking a page
• Remove the statistic counting the number of pages skipped.
• Redo the skip pages function, pull out certain conditions outside it.
• Switch to locking the page instead of using try lock.
• Allow skipping pages without reading them or racing with eviction.
• Forgo modified check if the page is not in memory | 03 Aug 21 11:19 UTC
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Task Logs (many-collection-test)