As part of this ticket, modify TextSearchPredicate to support $encStrNormalizedEq.

End to end testing will not be done as part of this ticket.

Goals for this task:

Leave stub for TextSearchPredicate::generateTags(). generateTags() will be implemented in a follow-up item once FLE2FindTextPayload is delivered.
Register TextSearchPredicate as the rewriter for ExpressionEncStrNormalizedEq.
Make sure match expression methods of TextSearchPredicate throw an error, since match expressions for $encStrNormalizedEq are not supported, only aggregate expressions versions are supported.
Testing:

Take a look at the way unit testing was done for other predicates in query_rewriter_test.cpp. We will follow a similar approach, which should allow us to unit test everything except generateTags(). generateTags() will be tested as part of the end to end testing effort.
Make sure we add unit tests which ensure we don't rewrite the expression when we force a collection scan (look at
EqualityPredicateCollScanRewriteTest).