JIT: Clean up redundant type checks after GDV

[EgorBo]

Closes #52370

Repro (DOTNET_TieredPGO=1):

using System.Runtime.CompilerServices;
using System.Threading;

public class Program
{
    public static void Main()
    {
        // Promote Test to tier1 and collect some profile data
        for (int i = 0; i < 100; i++)
        {
            Test();
            Thread.Sleep(16);
        }
    }

    [MethodImpl(MethodImplOptions.NoInlining)]
    static B GetB() => new B(); // not inlineable, but returns sealed type

    static A GetA() => GetB();

    [MethodImpl(MethodImplOptions.NoInlining)]
    static int Test()
    {
        return GetA().GetValue();
    }

}

public class A
{
    public virtual int GetValue() => 1;
}

public sealed class B : A
{
    public override int GetValue() => 3;
}

Codegen for Test:

G_M58954_IG01:              ;; offset=0000H
       4883EC28             sub      rsp, 40
						;; bbWeight=1    PerfScore 0.25
G_M58954_IG02:              ;; offset=0004H
       E8C783FEFF           call     Program:GetB():B
       488BC8               mov      rcx, rax
       48B880941DE8F97F0000 mov      rax, 0x7FF9E81D9480
       483901               cmp      qword ptr [rcx], rax
       750A                 jne      SHORT G_M58954_IG04
       B803000000           mov      eax, 3
						;; bbWeight=1    PerfScore 4.75
G_M58954_IG03:              ;; offset=0020H
       4883C428             add      rsp, 40
       C3                   ret      
						;; bbWeight=1    PerfScore 1.25
G_M58954_IG04:              ;; offset=0025H
       FF15B5E83A00         call     [B:GetValue():int:this]
       EBF3                 jmp      SHORT G_M58954_IG03
						;; bbWeight=0    PerfScore 0.00
; Total bytes of code 45

New codegen for Test:

G_M58954_IG01:              ;; offset=0000H
       4883EC28             sub      rsp, 40
						;; bbWeight=1    PerfScore 0.25
G_M58954_IG02:              ;; offset=0004H
       E8C782FEFF           call     Program:GetB():B
       3900                 cmp      dword ptr [rax], eax
       B803000000           mov      eax, 3
						;; bbWeight=1    PerfScore 3.25
G_M58954_IG03:              ;; offset=0010H
       4883C428             add      rsp, 40
       C3                   ret      
						;; bbWeight=1    PerfScore 1.25
; Total bytes of code 21

The fix basically folds trees like:

[000004] -ACXG+------              *  ASG       ref   
[000003] D----+-N----              +--*  LCL_VAR   ref    V01 tmp1         
[000026] --CXG+------              \--*  CALL      ref    Program.GetB


[000013] ---X-+------              *  JTRUE     void  
[000012] J--X-+-N----              \--*  NE        int   
[000011] H----+------                 +--*  CNS_INT(h) long   0x7ff9e8e89480 class
[000010] #--X-+------                 \--*  IND       long  
[000009] -----+------                    \--*  LCL_VAR   ref    V01 tmp1         

where tmp1 is known to be of 0x7ff9e8e89480 class