fix: escape Oracle NoSQL regex literals

[robertpatrick]

Summary

Fix Oracle NoSQL regex_like query generation for LIKE-style predicates when the search value contains regex metacharacters.

Oracle NoSQL SQL string literals require regex escape backslashes to be escaped as well. Previously values such as a.c generated a\.c, which Oracle NoSQL rejects with:

PREPARE: Illegal Argument: Error: Illegal escape sequence: '\.'

This change emits doubled backslashes, e.g. a\.c, so the SQL literal is accepted and the regex engine receives the intended escaped metacharacter.

Changes

• Escape regex metacharacters with doubled backslashes for Oracle NoSQL SQL string literals.
• Apply the same escaping behavior to LIKE, contains, startsWith, and endsWith conversion helpers.
• Update OracleNoSqlLikeConverterTest expectations to cover SQL-literal-safe escaping.

Validation

mvn -pl jnosql-oracle-nosql -Dtest=OracleNoSqlLikeConverterTest test

Result: 29 tests passed, 0 failures.

[robertpatrick]

This PR depends on the changes in #372 for the CI build fix.

[robertpatrick]

@otaviojava Now that #372 is merged, rerunning the CI should succeed. Do I need to make a phony update to this PR or can you reinitiate the CI builds?

[otaviojava]

Hey again, thanks, and I already merged it.