Fix minimum maximum validators with type array

[justin-tay]

Closes #1226

[Copilot]

Pull request overview

This PR fixes an issue where minimum, maximum, exclusiveMinimum, and exclusiveMaximum validators did not work correctly when the schema's type field was an array (e.g., ["null", "integer"]). The fix refactors the type checking logic from using getNodeFieldType() to a new hasType(String type) method that can handle both string and array type values.

Changes:

• Refactored getNodeFieldType() method to hasType(String type) in BaseKeywordValidator to support array type checking
• Updated four validator classes to use the new hasType() method instead of getNodeFieldType()
• Added comprehensive test coverage for all four validators with array type scenarios

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/main/java/com/networknt/schema/keyword/BaseKeywordValidator.java	Replaced getNodeFieldType() with hasType() method to support array type checking
src/main/java/com/networknt/schema/keyword/MinimumValidator.java	Updated to use hasType() instead of getNodeFieldType()
src/main/java/com/networknt/schema/keyword/MaximumValidator.java	Updated to use hasType() instead of getNodeFieldType()
src/main/java/com/networknt/schema/keyword/ExclusiveMinimumValidator.java	Updated to use hasType() instead of getNodeFieldType()
src/main/java/com/networknt/schema/keyword/ExclusiveMaximumValidator.java	Updated to use hasType() instead of getNodeFieldType()
src/test/java/com/networknt/schema/MinimumValidatorTest.java	Added test for minimum validator with array type
src/test/java/com/networknt/schema/MaximumValidatorTest.java	Added test for maximum validator with array type
src/test/java/com/networknt/schema/ExclusiveMinimumValidatorTest.java	Added test for exclusiveMinimum validator with array type
src/test/java/com/networknt/schema/ExclusiveMaximumValidatorTest.java	New test file for exclusiveMaximum validator with array type

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