[Java] Fix the failure of testAllocationManagerType

[asfimport]

It appears sometimes in the CI build.

[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.503 s <<< FAILURE! - in org.apache.arrow.memory.TestAllocationManager
[ERROR] testAllocationManagerType Time elapsed: 0.483 s <<< ERROR!
java.lang.ExceptionInInitializerError
at org.apache.arrow.memory.TestAllocationManager.testAllocationManagerType(TestAllocationManager.java:35)
Caused by: java.lang.NullPointerException: allocationManagerFactory
at org.apache.arrow.memory.TestAllocationManager.testAllocationManagerType(TestAllocationManager.java:35)

Reporter: Liya Fan / @liyafan82
Assignee: Liya Fan / @liyafan82

PRs and other links:

• GitHub Pull Request #7628

_{Note: This issue was originally created as ARROW-9315. Please see the migration documentation for further details.}

[asfimport]

Liya Fan / @liyafan82:
This problem is cyclic dependency of class loading:

DefaultAllocationManagerOption#getDefaultAllocationManagerType =>
init DefaultAllocationManagerOption class =>
DefaultAllocationManagerOption#getFactory =>
init NettyAllocationManager#EMPTY_BUFFER =>
init ArrowBuf class =>
init BaseAllocator class (line 74) =>
init BaseAllocator#DEFAULT_CONFIG =>
ImmutableConfig (constructor) =>
ImmutableConfig#getAllocationManagerFactory =>
BaseAllocator.Config#getAllocationManagerFactory =>
NPE

[asfimport]

Liya Fan / @liyafan82:
Issue resolved by pull request 7628
#7628