[Kotlin][Spring] fix #19244 integer enum

[pstorch]

fix #19244 kotlin-spring generator produces non-compiling Kotlin code for enum type integer.
The error is with @JsonProperty annotation which only accepts strings arguments.
This fix uses @JsonValue and @JsonCreator annotations.

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[luismospinam]

This MR introduced an error when generating enums. From Jackson 2.11, when using JsonCreator a Mode argument needs to be specified otherwise, it will throw an exception when deserializing an enum

Input mismatch reading Enum `EnumType`: properties-based `@JsonCreator` ([method EnumType#forValue(java.lang.String)]) expects JSON Object (JsonToken.START_OBJECT), got JsonToken.VALUE_STRING

Not entirely sure but I think adding the Mode JsonCreator.Mode.DELEGATING will work

@JsonCreator(mode = JsonCreator.Mode.DELEGATING)

Please see the following:
FasterXML/jackson-module-kotlin#336
https://cowtowncoder.medium.com/jackson-2-12-most-wanted-3-5-246624e2d3d0

[pstorch]

@luismospinam do you have an example? I could successfully serialize and deserialize the enums with the generated code.