Replace occurrences of params T[] with params ReadOnlySpan<T> where possible

[h3xds1nz]

Description

Continues the journey that started in #9468 and converts some internal call-chains from params T[] to params ReadOnlySpan<T> where I felt it is without any side-effects, largely decreasing allocations in other scenarios besides just tracing and improving both performance and allocations since we do not need to create a new heap array of T[] everytime.

Simple benchmark with 0, 1, and 3 params

Method	Mean [ns]	Error [ns]	StdDev [ns]	Gen0	Code Size [B]	Allocated [B]
Original	7.547 ns	0.1129 ns	0.1056 ns	0.0029	143 B	48 B
PR__EDIT	1.532 ns	0.0096 ns	0.0085 ns	-	120 B	-

Benchmark code

private static object target1;
private static object target2;
private static object target3;

[GlobalSetup]
public void Setup()
{
    target1 = new object();
    target2 = new object();
    target3 = new object();
}

[Benchmark]
public int Original()
{
    int test1_1 = Test1(1);
    int test1_2 = Test1(1, null);
    int test1_3 = Test1(1, target1, target2, target3);

    return  test1_1 + test1_2 + test1_3;
}


[Benchmark]
public int PR__EDIT()
{
    int test2_1 = Test2(1);
    int test2_2 = Test2(1, null);
    int test2_3 = Test2(1, target1, target2, target3);

    return test2_1 + test2_2 + test2_3;
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
private int Test1(int stuff, params object[] args)
{
    if (args is null || args.Length == 0)
        return stuff;

    return args[0].GetHashCode();
}

[MethodImpl(MethodImplOptions.AggressiveInlining)]
private int Test2(int stuff, params ReadOnlySpan<object> args)
{
    if (args.IsEmpty)
        return stuff;

    return args[0].GetHashCode();
}

Customer Impact

Improved performance, decreased allocations.

Regression

No.

Testing

Local build, test app run.

Risk

Low.

Microsoft Reviewers: Open in CodeFlow

[h3xds1nz]

I have fixed the merge conflict and rebased.

[h3xds1nz]

Resolved merge conflicts 09

[harshit7962]

The changes LGTM. @h3xds1nz, the changes can be taken in after resolving the conflicts.

[harshit7962]

Re-approving post conflict resolution.

[harshit7962]

Thanks @h3xds1nz for the contribution.

[h3xds1nz]

@harshit7962 Thanks, this one is big.