JAVA-3062: Figure out a better solution for PreparedStatementIT tests…

… around JAVA-3058

PreparedStatementIT.java:
- Make tests resistant to JVM GC clearing items from prepared statement cache mid-test

PreparedStatementCachingIT.java:
- Move to IsolatedTests category because it uses system properties
- Consolidate to single invalidationResultSetTest method
- Verify exact set of types change events seen
- Best-effort check no duplicated type-change/cache-removal events were fired

SessionUtils.java
- SESSION_BUILDER_CLASS_PROPERTY property should be read dynamically