[Work Graphs] Invalid Shader function attributes

Description
DXC allows the following input/output attributes on shader functions:

• NodeArraySize - no warning or error
• MaxRecords - no warning or error
• AllowSparseNodes - warning, no error
• UnboundedSparseNodes - warning, no error

I expected all of these to be errors. Some developers have expressed confusion since they are allowed.

Steps to Reproduce
https://godbolt.org/z/9jvhqcPhs

struct NodeRecord
{
    float4 spam;
    uint gridSize : SV_DispatchGrid;
};

[Shader("node")] 
[NodeLaunch("broadcasting")] 
[NodeIsProgramEntry] 
[NodeMaxDispatchGrid(64, 64, 1)] 
[NumThreads(32, 1, 1)] 
void Foo(
    DispatchNodeInputRecord<NodeRecord> inputRecord,
    [NodeArraySize(128)] [MaxRecords(1)] NodeOutputArray<NodeRecord> bar, 
    in uint ThreadIndex : SV_GroupIndex
    )
{
}

[Shader("node")] 
[NodeLaunch("coalescing")] 
[NumThreads(8, 4, 1)] 
[NodeArraySize(1)] // no warning or error
[MaxRecords(1)] /// no warning or error
[AllowSparseNodes] // warning, no error
[UnboundedSparseNodes] // warning, no error
void Bar(
    [MaxRecords(4)] GroupNodeInputRecords<NodeRecord> inputRecords
    )
{
}

Actual Behavior
The DXC compile succeeds. Warning messages are easily missed and ignored.

<source>:27:2: warning: 'UnboundedSparseNodes' attribute only applies to parameters [-Wignored-attributes]
[UnboundedSparseNodes] // warning, no error
 ^
<source>:26:2: warning: 'AllowSparseNodes' attribute only applies to parameters [-Wignored-attributes]
[AllowSparseNodes] // warning, no error
 ^

Compiler returned: 0

Environment

• DXC 1.8.2506, 1.8.2306-preview
• Win11 24H2

Start with the Godbolt reproduction and the listed DXC warning output to confirm the four attribute cases. Trace the compiler's HLSL shader-attribute validation for NodeArraySize, MaxRecords, AllowSparseNodes, and UnboundedSparseNodes, then add or update coverage so each invalid placement produces an error and run the relevant DXC tests.