Add support for updated condtionals

[doneill]

EarthRanger event form editor v2 schema conditionals introduces richer schemas that handle array/object/string field types within a single anyOf, plus multi-value support and four new operators.

Key Architectural Difference: Root vs. Field Scope

Most operators are field-scoped — their schema is applied to scope: "#/properties/fieldName". IS_EMPTY is root-scoped because it must check for field absence (not: { required: [fieldName] }), which is a property of the parent object, not the field value itself.

This requires updating buildConditionSchema and buildSchemaBasedCondition to route IS_EMPTY to root scope

Action:

• Update the conditional support in the library to meet the new conditional specifications and operators

Expectation:

• Conditional fields in EarthRanger v2 schemas are fully supported in client apps