raw_operation_utils.js has an isBinaryCompatibleFlagEnabledAndStable utility, which should return true if all binaries in the cluster have a binary-compatible feature flag enabled, and false otherwise.

However the current implementation of function has two issues for multiversion suites:

• It assumes the version of the feature flag document returned by getParameter contains the minimum version at which the flag is enabled. However binary-compatible feature flags do not have a version: X.Y declaration in .idl, and instead the version is always the latest binVersion.
• The function currently only returns true once the flag is enabled on both lastLTS and lastContinuous. Once v8.3 is released, tests like timeseries_raw_data_getmore.js, will start running on mixed lastContinuous+latest suites, yet the utility will incorrectly return that the flag can not be used.

Fix the handling of multiversion suites in the utility.