Support build_explain_clause(options = [])

This commit implements `build_explain_clause(options = [])` that is no-op to remove the warning below
because Oracle Database does not support something like `explain analyze` in MySQL.

```ruby
$ bundle exec rspec spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:356
==> Loading config from ENV or use default
==> Running specs with ruby version 3.3.5
/home/yahonda/.rbenv/versions/3.3.5/lib/ruby/gems/3.3.0/bundler/gems/rails-cefd9e9942c5/activesupport/lib/active_support/logger_silence.rb:5: warning: logger was loaded from the standard library, but will no longer be part of the default gems starting from Ruby 3.5.0.
You can add logger to your Gemfile or gemspec to silence this warning.
==> Effective ActiveRecord version 7.1.4
Run options: include {:locations=>{"./spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb"=>[356]}}
DEPRECATION WARNING: The current database adapter, OracleEnhanced, does not support explain options. To remove this warning, the adapter must implement `build_explain_clause(options = [])`. (called from block (3 levels) in <top (required)> at /home/yahonda/src/github.com/rsim/oracle-enhanced/spec/active_record/connection_adapters/oracle_enhanced_adapter_spec.rb:356)
.

Finished in 0.50556 seconds (files took 0.54442 seconds to load)
1 example, 0 failures

$
```

Fix #2394
Refer to rails/rails#47043

Author: yahonda

lib/active_record/connection_adapters/oracle_enhanced/database_statements.rb

@@ -65,7 +65,7 @@ def supports_explain?
           true
         end
 
-        def explain(arel, binds = [])
+        def explain(arel, binds = [], options = [])
           sql = "EXPLAIN PLAN FOR #{to_sql(arel, binds)}"
           return if /FROM all_/.match?(sql)
           if ORACLE_ENHANCED_CONNECTION == :jdbc
@@ -76,6 +76,11 @@ def explain(arel, binds = [])
           select_values("SELECT * FROM TABLE(DBMS_XPLAN.DISPLAY)", "EXPLAIN").join("\n")
         end
 
+        def build_explain_clause(options = [])
+          # Oracle does not have anything similar to "EXPLAIN ANALYZE"
+          # https://docs.oracle.com/en/database/oracle/oracle-database/23/sqlrf/EXPLAIN-PLAN.html#GUID-FD540872-4ED3-4936-96A2-362539931BA0
+        end
+
         # New method in ActiveRecord 3.1
         # Will add RETURNING clause in case of trigger generated primary keys
         def sql_for_insert(sql, pk, binds, _returning)