WIP: Subtract negative array header size from offset

[VermaSh]

This restores the tree structure for non off-heap path. During refactoring for off-heap, the tree structure was accidentally changed to use addition instead of subtract. Reverting the change as there might be opts performing pattern matching against the original tree structure.

[VermaSh]

Depends on eclipse/omr#7405
cc: @r30shah / @zl-wang

[VermaSh]

Launched a new personal build with these changes.

[VermaSh]

Looking into the vm failure. Launched grinder for verification.

Interpreter crash

12:59:16  Unhandled exception
12:59:16  Type=Segmentation error vmState=0x00000000
12:59:16  J9Generic_Signal_Number=00000018 Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000001
12:59:16  Handler1=000003FF8C2C9538 Handler2=000003FF8C1B1A60 InaccessibleAddress=0000000000000000
12:59:16  gpr0=000003FF11724B10 gpr1=000003FF88028B80 gpr2=0000000000000008 gpr3=0000000000000018
12:59:16  gpr4=000003FEDC149500 gpr5=0000000000000020 gpr6=0000000000000000 gpr7=000003FEAC0066C0
12:59:16  gpr8=000003FF11724E9A gpr9=000003FF4927E310 gpr10=0000000000000000 gpr11=000003FF4927E1E0
12:59:16  gpr12=000003FF66F9A108 gpr13=000003FF8C511F68 gpr14=000003FF8C353CB2 gpr15=000003FF4927DE78
12:59:16  psw=000003FF8C353CD0 mask=0705100180000000 fpc=00080000 bea=000003FF861B4204
12:59:16  fpr0=000003ff870a4ba8 (f: 2265598976.000000, d: 2.171921e-311)
12:59:16  fpr1=4032000000000000 (f: 0.000000, d: 1.800000e+01)
12:59:16  fpr2=000003ff88155404 (f: 2283099136.000000, d: 2.171930e-311)
12:59:16  fpr3=2020202020202020 (f: 538976256.000000, d: 6.013470e-154)
12:59:16  fpr4=bfdfc47d16901db4 (f: 378543552.000000, d: -4.963677e-01)
12:59:16  fpr5=a0c0a0c0a0c00000 (f: 2696937472.000000, d: -6.349662e-151)
12:59:16  fpr6=40288743fc3f7899 (f: 4232018176.000000, d: 1.226419e+01)
12:59:16  fpr7=0000000000000000 (f: 0.000000, d: 0.000000e+00)
12:59:16  fpr8=000003ff4923f000 (f: 1227091968.000000, d: 2.171408e-311)
12:59:16  fpr9=0000000000041000 (f: 266240.000000, d: 1.315400e-318)
12:59:16  fpr10=000003fec400af28 (f: 3288379136.000000, d: 2.170304e-311)
12:59:16  fpr11=0000000000000000 (f: 0.000000, d: 0.000000e+00)
12:59:16  fpr12=000003ff4927f900 (f: 1227356416.000000, d: 2.171408e-311)
12:59:16  fpr13=0000000000000001 (f: 1.000000, d: 4.940656e-324)
12:59:16  fpr14=000003ff4923f000 (f: 1227091968.000000, d: 2.171408e-311)
12:59:16  fpr15=000003ff30059a28 (f: 805673536.000000, d: 2.171200e-311)
12:59:16  Module=/home/jenkins/workspace/Test_openjdk11_j9_sanity.openjdk_s390x_linux_Personal_testList_0/jdkbinary/j2sdk-image/lib/default/libj9vm29.so
12:59:16  Module_base_address=000003FF8C280000
12:59:16  Target=2_90_20240724_2196 (Linux 5.15.0-113-generic)
12:59:16  CPU=s390x (4 logical CPUs) (0x1f5c10000 RAM)
12:59:16  ----------- Stack Backtrace -----------
12:59:16  _ZN26VM_BytecodeInterpreterFull3runEP10J9VMThread+0xf40 (0x000003FF8C353CD0 [libj9vm29.so+0xd3cd0])
12:59:16  bytecodeLoopFull+0xee (0x000003FF8C352D7E [libj9vm29.so+0xd2d7e])
12:59:16  c_cInterpreter+0x64 (0x000003FF8C46EE8C [libj9vm29.so+0x1eee8c])
12:59:16  ---------------------------------------