Enable CA1863 (Use 'CompositeFormat') as suggestion (#89029)

I ran it over runtime, and the only things flagged were for exceptional cases where it's not worth using.  Rather than a bunch of suppressions, I'm just enabling it as info-level.

eng/CodeAnalysis.src.globalconfig

@@ -477,6 +477,9 @@ dotnet_diagnostic.CA1861.severity = warning
 # CA1862: Prefer using 'StringComparer'/'StringComparison' to perform case-insensitive string comparisons
 dotnet_diagnostic.CA1862.severity = warning
 
+# CA1863: Use 'CompositeFormat'
+dotnet_diagnostic.CA1863.severity = suggestion
+
 # CA1864: Prefer the 'IDictionary.TryAdd(TKey, TValue)' method
 dotnet_diagnostic.CA1864.severity = warning
 

eng/CodeAnalysis.test.globalconfig

@@ -474,6 +474,9 @@ dotnet_diagnostic.CA1861.severity = none
 # CA1862: Prefer using 'StringComparer'/'StringComparison' to perform case-insensitive string comparisons
 dotnet_diagnostic.CA1862.severity = none
 
+# CA1863: Use 'CompositeFormat'
+dotnet_diagnostic.CA1863.severity = none
+
 # CA1864: Prefer the 'IDictionary.TryAdd(TKey, TValue)' method
 dotnet_diagnostic.CA1864.severity = none
 

src/coreclr/System.Private.CoreLib/src/System/RuntimeType.CoreCLR.cs

@@ -1895,8 +1895,8 @@ namespace System
                 else if (!declaredType.IsAssignableFrom(reflectedType))
                 {
                     // declaredType is not Array, not generic, and not assignable from reflectedType
-                    throw new ArgumentException(string.Format(
-                        CultureInfo.CurrentCulture, SR.Argument_ResolveMethodHandle,
+                    throw new ArgumentException(SR.Format(
+                        SR.Argument_ResolveMethodHandle,
                         reflectedType.ToString(), declaredType.ToString()));
                 }
             }