Core: Fix CreateTableRequest so serialized keys align with spec and ensure field name tests are for serialized JSON values per spec

[kbendick]

This fixes serialization for CreateTableRequest and LoadTableResponse, which have multi-word fields. Those fields need to be serialized using kebab-case in Jackson rather than camelCase

Previously, we were testing whether or not each RESTCatalog request / response had the expected fields named as in the Java class. This updates to test each objects serialized JSON form to ensure it matches the kebab-case fields from the spec.

This also updated CreateTableRequest to use kebab-case properly and removes the overridden definition of hasOnlyKnownFields from TestOAuthTokenResponse, as that definition is now in the base class for these tests, TestRequestResponseBase.

This PR can replace #5133 entirely (or be merged in after that one and rebasing).

[kbendick]

This is now the version of the test that exists in the base class RequestResponseTestBase, and thus does not need to be overridden anymore.

[kbendick]

cc @rdblue as this PR can replace #5133

[rdblue]

@kbendick, can you please update this since #5133 was merged and the other fields need to be corrected?

[kbendick]

@kbendick, can you please update this since #5133 was merged and the other fields need to be corrected?

Sure. Probably the easiest way to fix the other names is to rename the class fields. Will do that.

[kbendick]

@kbendick, can you please update this since #5133 was merged and the other fields need to be corrected?

Sure. Probably the easiest way to fix the other names is to rename the class fields. Will do that.

This is done. If we merge this, then #5118 can be rebased and considered for merging afterwards.

[kbendick]

There's a failing bloom filter related test in Java CI

org.apache.iceberg.parquet.TestBloomRowGroupFilter > testBytesEq FAILED
    java.lang.AssertionError: Should not read: cannot match a new generated binary
        at org.junit.Assert.fail(Assert.java:89)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertFalse(Assert.java:65)
        at org.apache.iceberg.parquet.TestBloomRowGroupFilter.testBytesEq(TestBloomRowGroupFilter.java:587)

Rerunning to see if it's just flaky.