[LoongArch64] Fix NativeAOT libs.tests failed cases in System.Runtime.Tests & System.Runtime.Numerics.Tests.

[LuckyXu-HF]

• Fix the boundary overflow of imm+1 when imm = (~0) for Unsigned GT_LE/GT_GT in CodeGen::genCodeForCompare().
• Fix the IntCastOverflowPositiveCheck with UINT32_MAX in CodeGen::genIntCastOverflowCheck().
• Optimize CodeGen::genIntCastOverflowCheck() similar to riscv.

[dotnet-policy-service]

Tagging subscribers to this area: @JulieLeeMSFT, @jakobbotsch
See info in area-owners.md if you want to be subscribed.

[shushanhf]

LGTM

@jakobbotsch , could you please review this PR?

[LuckyXu-HF]

The boundary failed testcases in NAOT-libs.tests of System.Runtime.Tests and System.Runtime.Numerics.Tests is:

failed testcases in NAOT-System.Runtime.Tests

...
  [FAIL] System.Tests.UInt128Tests_GenericMath.op_ModulusTest
  Assert.Equal() Failure: Values differ
  Expected: 1
  Actual:   340282366920938463444927863358058659841
     at System.Tests.UInt128Tests_GenericMath.op_ModulusTest() + 0x200
     at System.Runtime!<BaseAddress>+0x31a48dc
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
  [SKIP] System.Tests.TypeTests.GetTypeByName_NonRoundtrippable
  [SKIP] System.Reflection.Tests.MethodBaseTests.TestMethodBody
  [FAIL] System.Tests.Int128Tests_GenericMath.DivRemTest
  Assert.Equal() Failure: Values differ
  Expected: Tuple (85070591730234615865843651857942052863, 1)
  Actual:   Tuple (85070591730234615865843651857942052863, -18446744073709551615)
     at System.Tests.Int128Tests_GenericMath.DivRemTest() + 0x274
     at System.Runtime!<BaseAddress>+0x31a48dc
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
  [FAIL] System.Tests.Int128Tests_GenericMath.op_ModulusTest
  Assert.Equal() Failure: Values differ
  Expected: 1
  Actual:   -18446744073709551615
     at System.Tests.Int128Tests_GenericMath.op_ModulusTest() + 0x200
     at System.Runtime!<BaseAddress>+0x31a48dc
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
  [FAIL] System.Tests.UInt128Tests_GenericMath.DivRemTest
  Assert.Equal() Failure: Values differ
  Expected: Tuple (85070591730234615865843651857942052863, 1)
  Actual:   Tuple (85070591730234615865843651857942052863, 340282366920938463444927863358058659841)
     at System.Tests.UInt128Tests_GenericMath.DivRemTest() + 0x274
     at System.Runtime!<BaseAddress>+0x31a48dc
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
...
Tests run: 65669, Errors: 0, Failures: 4, Skipped: 119. Time: 16.9742184s

failed testcases in NAOT-System.Runtime.Numerics.Tests

...
  [FAIL] System.Numerics.Tests.cast_fromTest.RunUInt32ExplicitCastFromBigIntegerTests
  Assert.Throws() Failure: No exception was thrown
  Expected: typeof(System.OverflowException)
     at System.Numerics.Tests.cast_fromTest.RunUInt32ExplicitCastFromBigIntegerTests() + 0x204
     at System.Runtime.Numerics!<BaseAddress>+0xd89aec
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
  [FAIL] System.Numerics.Tests.cast_fromTest.RunUInt64ExplicitCastFromBigIntegerTests
  Assert.Throws() Failure: Exception type was not an exact match
  Expected: typeof(System.OverflowException)
  Actual:   typeof(Xunit.Sdk.EqualException)
  ---- Assert.Equal() Failure: Values differ
  Expected: 18446744073709551615
  Actual:   4294967295
     at System.Numerics.Tests.cast_fromTest.RunUInt64ExplicitCastFromBigIntegerTests() + 0x224
     at System.Runtime.Numerics!<BaseAddress>+0xd89aec
     at System.Reflection.DynamicInvokeInfo.Invoke(Object, IntPtr, Object[], BinderBundle, Boolean) + 0x14c
  ----- Inner Stack Trace -----
...
Tests run: 2627, Errors: 0, Failures: 2, Skipped: 1. Time: 46.9733519s

Fixed:
NAOT-System.Runtime.Tests: Tests run: 65669, Errors: 0, Failures: 0, Skipped: 119. Time: 13.0480331s
NAOT-System.Runtime.Numerics.Tests: Tests run: 2627, Errors: 0, Failures: 0, Skipped: 1. Time: 37.6802024s