Fix flaky ORC filecache test #9240
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Fixes #8776. The fix attempted in #9188 was flawed in that it mistakenly assumed reattempts would increment existing metrics but in fact there are new metrics being generated for each attempt. Therefore this takes a simpler approach of retrying the operation until we do not see any filecache data range misses and then verifying we see no misses and non-zero hits for footer and data ranges when expecting to get a full cache hit on a file.